Patent Publication Number: US-2023132453-A1

Title: Hydroponics system

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a continuation of U.S. patent application Ser. No. 17/089,600, filed Nov. 4, 2020, the disclosure of which is incorporated, in its entirety, by this reference. 
    
    
     BACKGROUND 
     Hydroponics systems require adequate delivery of necessary nutrients and water to growing plants and control of temperature, pH, concentration, and oxygenation of the plants growing in the systems. 
     SUMMARY 
     The present disclosure is directed to hydroponics systems and methods. In some implementations, hydroponics systems include efficient, configurable grow reservoirs that utilize shared components while creating more space in grow facilities. The systems include vertical and horizontal rows or layouts of connected reservoirs and may be implemented with movable reservoirs to allow for access and reduce space. 
     In some implementations, systems include multiple reservoirs for holding nutrient solution. The multiple reservoirs may be connected to one another by irrigation tubing (e.g., in vertical layouts and in horizontal layouts) or by pipes (e.g., horizontal layouts). Incorporation of the pipes (4″ pipes) in the layouts provides for efficient water circulation in a closed loop configuration throughout the systems in combination with one or more shared water pumps. 
     In some implementations, the systems include at least one shared float valve located in one or more reservoirs to maintain a predetermined water level. In some implementations, the reservoirs include at least one flat corner wall to receive components through apertures located in the flat corner wall to make connections to system components easier and to save space in a facility. Each reservoir may also include a bottom wall with an uneven surface, such as at least one channel in an interior surface, for increased movement of air or water. 
     In some implementations, the systems include at least one shared air pump to transport air to multiple reservoirs in a system with aeration tubing. In some implementations, the systems include at least one shared water chiller configured to lower the temperature of water in the hydroponics system. 
     The disclosed technology may include reservoirs that may be configured in rows and moveable (e.g., on wheels) so that the rows can be arranged to eliminate aisles in a facility and allow for additional space for additional reservoirs or for other equipment or merely for additional space. In some implementations, control reservoirs may be incorporated into a horizontal or vertical system layout to increase the efficiency of the hydroponic systems while conserving space. 
     In some implementations, the disclosed systems include at least one shared drain out system in the reservoirs to drain water from an entire row of reservoirs at the same time. 
     These and various other features and advantages will be apparent from reading the following detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         FIG.  1    is an illustration of an example lid and example reservoir in a hydroponics system according to the present disclosure. 
         FIGS.  2 A-C  are illustrations of example reservoirs in a hydroponics system according to the present disclosure. 
         FIG.  3    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  4    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  5    is an illustration of an example hydroponics system according to the present disclosure. 
         FIGS.  6 A and  6 B  are illustrations of an example hydroponics system according to the present disclosure. 
         FIG.  7    is an illustration of example hydroponics systems according to the present disclosure. 
         FIG.  8    is an illustration of an example hydroponics system according to the present disclosure. 
         FIGS.  9 A-C  are illustrations of example hydroponics systems according to the present disclosure. 
         FIG.  10    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  11    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  12    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  13    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  14    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  15    is an illustration of an example hydroponics system according to the present disclosure. 
         FIG.  16    is a flowchart of example operations in a hydroponics system according to the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure describes hydroponics systems, methods, and related technology to provide a constant supply of nutrient solution (e.g., essential nutrients and water) in a water solvent to growing plants. The disclosed technology includes several system components (e.g., water pump, air pump, float valve) configured to ensure this constant supply of essential nutrients and water. 
     Specifically, the disclosed systems and methods provide connectivity among multiple grow reservoirs, which includes shared components to meet adequate nutrient requirements in large scale grow operations. The term “shared” refers to one or more components that are used in a hydroponics system and provide a benefit to multiple reservoirs in the system and eliminate the need for each reservoir to have all of its own components. For example, the systems may include a shared water pump, a shared air pump, and/or a shared water chiller. The shared water pump may pump and pull water in a closed loop configuration throughout the reservoirs. A shared air pump may provide air via aeration tubing to the water in the reservoirs. A shared water chiller may lower the temperature of the water in the hydroponics system. Therefore, each reservoir does not require its own water pump, its own air pump, and its own water chiller. In some implementations, shared drain out systems and float valves may be shared in a hydroponics system. As a result, space is conserved in a grow facility (or other space or building) housing a hydroponics system. In some implementations, there may be one or more shared components. For example, there may be more than one shared water pump to maintain the water level height in the reservoirs throughout the system. 
     In some implementations, the disclosed hydroponics systems may provide an abundance of water to the roots of plants via constant transport of water between reservoirs. A shared float valve can be supplied in a reservoir with various sources of water or nutrient solutions such as a basic tap with city or well water or a tank of water or nutrient solution. The water can be added manually, for example, topping off with a hose or bucket or automatically, such as using a hose connected to tap water and a float valve. In some implementations, a reverse osmosis water filter can be used along with various other devices such as a nutrient injector dosing system which can be added to maintain the nutrient and pH levels based on the feed schedule entered into the computer program. The reservoirs in the systems may be connected to each other by a network of pipes or irrigation tubing in a closed loop configuration where water circulates continuously throughout the system. 
     In addition to water, plants also need constant oxygenation. Otherwise, roots can struggle to obtain sufficient oxygen. This can be seen in scenarios where roots are constantly immersed in water (e.g., deep water culture or nutrient film technique). Shared air pumps may be incorporated into the disclosed hydroponics systems to deliver oxygen to nutrient solution in the reservoirs. 
     In some implementations, lids for the reservoirs may be incorporated into the disclosed hydroponics systems to eliminate evaporation of a nutrient solution in the reservoir. Evaporation can lead to an increased rate of change in concentration of a nutrient solution, and as a result, require more system adjustments. Lids also keep a reservoir from getting contaminated or prevent the entrance of foreign objects or light, which can lead to algae growth. 
     The disclosed hydroponics systems are scalable and may include large configuration of multiple rows and columns of reservoirs, as well as vertical and horizontal layouts of reservoirs. The hydroponics systems can move large volumes of water and be configured for better spacing in a facility. 
     In some implementations, the disclosed technology includes fans, lights, water chillers, heaters, monitors, meters, trellises, float valves, reverse osmosis, pH buffering, and nutrient injector systems, computer simulations and models, enhanced aeration systems, etc. For example, a hydroponics system may provide that water through the float valve that can be replenished with a tank or refilled with a reverse osmosis, tap, etc. Specifically, a tank filled with nutrient solution can be fed (using a gravity, a pump, etc.) to the system. In some cases, other devices, such as an automatic nutrient injector dose, pH buffer injector, etc., may be used. 
     The examples provided in the figures include many components, some of which may be optional, and which are described for illustration in one example but may be incorporated into the other examples. The components may also be incorporated into a given hydroponics system and located on the outside or in the inside of the reservoirs, depending on the implementation. The components available for incorporation inside or outside the reservoirs may also be incorporated in any of the example horizontal and vertical layouts. The reservoirs may be configured and stacked on various platforms, structures, tables, etc. that allow the reservoirs to be aligned for connectivity in the horizontal and vertical layouts. In the figures, as shown, there may be duplicative component parts that are not marked with reference numerals, for purposes of simplifying the illustration. The duplicative component parts should be given the same interpretation as described in the original descriptions. For example, in  FIG.  6 B , there are sixteen grow reservoirs shown and only two reservoirs  604  are marked. The fourteen unmarked reservoirs may be interpreted to each be a reservoir  604 . 
     In the following description, reference is made to the accompanying drawing that forms a part hereof and in which are shown by way of illustration at least one specific embodiment. The following description provides additional specific embodiments. It is to be understood that other embodiments are contemplated and may be made without departing from the scope or spirit of the present invention. The following detailed description, therefore, is not to be taken in a limiting sense. While the present invention is not so limited, an appreciation of various aspects of the invention will be gained through a discussion of the examples provided below. 
     Referring to  FIG.  1   , an illustration of a top view of a lid  102  and a perspective view of a grow reservoir  104  in a hydroponics system  100  according to the present disclosure is shown. The reservoir lid  102  and the reservoir  104  may be various shapes (e.g., rectangle). 
     The reservoir lid  102  may include smaller (e.g., 2″) or bigger (e.g., 6″) apertures  140  or no apertures. In some implementations, the reservoir lid  102  may include a humidity dome. In implementations where the reservoir lid  102  includes apertures, the apertures may be placed in different locations. For example, in some implementations, the apertures are symmetrical and spaced out for the plants to grow. 
     In some implementations, as shown in  FIG.  1   , the reservoir  104  includes flat corner walls  106  of the reservoir  104 . Specifically, instead of in a traditional rectangular reservoir or container, where a side wall  110  and an end wall  112  connect directly to each other in a corner of the reservoir  104  in a 90° angle to form a perfect rectangle, in this implementation, a flat or beveled wall (flat corner wall  106 ) is located in the corner of the reservoir  104  parallel to a center of the reservoir  104  such a flat corner wall  106  of the reservoir  104  connects the side wall  110  and the end wall  112  of the reservoir  104  to each other. The flat corner walls  106  provide extra walls in the reservoir  104  to facilitate easy, better, and additional access for connections of components to the hydroponics system  100 . Apertures (shown and described in  FIGS.  2 A-C ) may be configured in the flat corner walls  106  and other walls of the reservoir  104  to allow for system components to connect through or up to the aperture for access to the reservoir  104 . The apertures may be located in various locations of the reservoirs and in various numbers and sizes (e.g., for large volumes of water) to facilitate easier access and better layout for more efficient system configurations. Grommets or other sealants, bulkhead fittings, connectors, etc. may be used to seal connections at the apertures. 
     In some implementations, as shown in  FIG.  1   , an interior surface of a bottom wall  108  of the reservoir  104  may be an uneven surface. In some examples, the interior surface has channels (e.g., passages, grooves, or other depressed areas) in the bottom wall  108  to allow for cooling underneath at the bottom of the reservoir  104 . For example, the pumps or other components parts (e.g. water pump or air pump) of the hydroponics system  100  may heat up the water in the reservoir  104 . The uneven surface provides passages for airflow to cool the water. 
     The uneven surface of the bottom wall  108  can also help with draining of the reservoir. For example, the uneven surface allows for water or other solutions to be completely drained via a drain out system (e.g., drain water out an aperture  316  for draining water, described in detail in  FIG.  3   ). A drain out aperture may be incorporated into a side wall or the bottom wall  108  of the reservoir. Irrigation tubing is attached to the drain out aperture. In some implementations, the irrigation tubing is connected to one or more drain out apertures located on one or more reservoirs. One or more shut off valves may be connected to the irrigation tubing. If the shut off valves are closed, water can fill the bottom of the reservoirs and the irrigation tubing. When a user opens the shut off valves, water can be removed from one or more reservoirs via the irrigation tubing. 
       FIGS.  2 A-C  are illustrations of example grow reservoirs  204  in hydroponics systems  200  according to the present disclosure. As shown, apertures can be placed in various locations on the reservoirs  204  in the disclosed technology, including in the flat corner walls  206   a  and  206   b,  the side walls  210 , and/or the end walls  212  of the of the reservoirs  204  to facilitate connectivity to certain component parts in a hydroponics system  200 . Any number of apertures may be configured on any of the walls of the reservoirs  204 , as needed, and in various sizes. 
     For example, as shown in  FIG.  2 A , a first aperture  214  may be located on a side wall  210 . In some examples, the first aperture  214  may be configured to receive smaller components, such as connectors or components (e.g., float valves, nutrient injectors, aeration tubing, as described in the following figures), which can vary in size (e.g., ⅜″). The apertures may be used with rubber grommets, for example, to connect such connectors. 
     A second aperture  216   a  may be located on an end wall  212 , a second aperture  216   b  may be located on a flat corner wall  206 , and a second aperture  216   c  may be located on the side wall  210 . In some examples, the second apertures  216   a - c  may be configured to receive components, such as connectors or components (e.g. irrigation tubing, as described in the following figures) which can vary in size (e.g., ¾″, 1″, etc.). 
     In some implementations, an elbow or straight connector with a grommet or tub outlet or inlet bulkhead fitting with or without a filter screen may be used. For example, a bulkhead fitting (e.g., 1″ and ¾″) with a screen may be used in combination with an aperture where the screen prevents roots from growing through an aperture and/or tubing and prevents the roots from clogging the aperture and/or tubing. Such screen and bulkhead fitting may be used, for example, in aperture  1116   a  in  FIG.  11   . 
     In another example, as shown in  FIG.  2 B , a third aperture  218  may be located on an end wall  212   a.  In some examples, the third aperture  218  may be configured to receive components, such as connectors or components (e.g., a 4″ pipe, as described in the following figures) which can vary in size (e.g., 3″, 4″, 6″, etc.). Specifically, the third aperture(s) may be located on at least one of the end walls  212   a  and  212   b  wherein a pipe can connect at the third aperture(s) to two reservoirs. 
     A second aperture  216   a  may be located on a flat corner wall  206   a.  A first aperture  214 , a second aperture  216   c  may be located on an end wall  212   b,  and a second aperture  216   b  may be located on a side wall  210 . A second aperture  216   d  may be located on a flat corner wall  206   b.  The reservoirs may be constructed in numerous configurations with various sized apertures in various locations. 
     In another example, as shown in  FIG.  2 C , a second aperture  216   a  may be located on an end wall  212   a,  a second aperture  216   b  may be located on a flat corner wall  206   a,  a second aperture  216   c  may be located on a side wall  210 , and a second aperture  216   d  may be located on an end wall  212   b.  A second aperture  216   e  may be located on a flat corner wall  206   b.    
     The disclosed technology provides for expandable, customizable layouts, with multiple rows and columns of reservoirs, using as many reservoir units as desired. The examples provided are for illustration, and systems can be configured with any numbers of reservoirs. As provided below, a single unit system is shown in  FIG.  3   , a single row system is shown in  FIG.  4   , and a double row system is shown in  FIG.  5   , and a rolling double row in  FIG.  9   . Additionally, the examples shown in  FIGS.  4 ,  5 , and  6    are horizontal layouts, with reservoirs connected to each other in a horizontal configuration. The disclosed technology also includes vertical layouts, with reservoirs connected to each other in a vertical configuration, as shown in  FIG.  11   . The disclosed technology also includes vertical and horizontal layouts, with reservoirs connected to each other in vertical and horizontal configurations, as shown in  FIGS.  12 ,  13 , and  14   . Various amounts of reservoirs and layouts can be used vertically and horizontally. 
     Referring to  FIG.  3   , an illustration of one single unit or grow reservoir  304  in an example hydroponics system  300  according to the present disclosure is shown. The reservoir  304  is shown in a sectional view to show that components may be located inside the reservoir. In other implementations (as shown and described in multi-unit reservoir hydroponics systems  FIGS.  4 ,  6 , and  6   ), the hydroponics system may have one or more reservoirs. 
     The single unit reservoir  304  in  FIG.  3    includes multiple component parts. Several component parts are shown configured to the reservoir  304  via apertures on the walls of the reservoir  304 . For example, apertures  316   a  is shown on flat corner wall  306   a,  apertures  316   b  and  316   d  are shown on side wall  310 , and aperture  316   c  is shown on the flat corner walls  306   b,  and a side wall  310  in  FIG.  3   . In some implementations, the apertures may be present in other surfaces of the reservoir (e.g., an end wall and a bottom wall of the reservoir) and in a reservoir lid (not shown). As will be described below, the single unit or reservoir  304  in  FIG.  3    may have a float valve  330 , a drain out system, a water pump  322 , and a water chiller  334 , a water level check gauge  324 , an air pump  320  and diffuser, etc. These components may be optional. 
     In  FIG.  3   , a float valve  330  is shown in the reservoir  304 . The float valve  330  is located inside the reservoir  304  and shown where it may be placed. Water enters the reservoir  304  (either via a pipe or irrigation tubing) through the float valve. Plants growing inside the reservoir  304  drink the water, as the water continues to enter at a constant rate to the reservoir  304 . The float valve  330  may be located in the reservoir  304  to maintain a predetermined water level and control the constant flow of water into the reservoir. The float valve shuts off the flow of water into the system when the water level reaches a predetermined height so the water does not overflow out of the grow reservoir  304 . 
     In some implementations, a water level check gauge  324  may be included in the system  300 . In  FIG.  3   , a water level check gauge  324  is shown located on the flat corner wall  306   a  via an aperture  316   a.  A water level check gauge  324  can allow the water level to be checked by an operator from the outside of the reservoir. 
     In some implementations, the disclosed technology includes a water level check gauge  324  with green translucent tubing. Light can promote algae growth in the nutrient solution and rapid changes in the temperature and pH of a nutrient solution, which can adversely impact the health of plants. The green translucent tubing used in these systems  300  prevents all colors of light except for green from entering the reservoir. As a result, the green translucent tubing prevents algae growth. The green translucent tubing can be made out of different types of polymer materials such as polyethylene, vinyl, etc. 
     The hydroponics system  300  also includes a drain out system. The drain out system facilitates water drainage from inside the reservoir  304  to a side or a bottom wall of the reservoir  304 , and out of the reservoir  304 , and is made up of several features. The drain out system includes irrigation tubing  332   a  that is connected to the reservoir  304  via an aperture  316   d,  a shut off valve  336 , and an adapter  338 . An aperture  316   d  in  FIG.  3    is shown on the side wall  310 . In some implementations, the aperture  316   d  for drain out may be located in or near the passages in the uneven surface of the bottom wall (as shown in  FIG.  1   ) of the reservoir  304 . Other configurations for a drain out are contemplated. 
     The adapter  338  in the drain out system shown in  FIG.  3    may be used as a tubing to hose adapter to move water from the reservoir  304  through a garden hose or other type of hose or tubing (not shown), either by draining or pumping. The adapter  338  may be male or female. For example, the adapter may be a male garden hose to tubing (e.g., ¾′, ½″, 1″, etc.), female garden hose to tubing, or both a male garden hose to tubing and a female garden hose to tubing. 
     In  FIG.  3   , a water pump  322  is located inside the reservoir  304 . In some implementations, the water pump  322  may be located outside the reservoir (e.g., water pumps in multi-unit systems (for example, as shown in  FIGS.  5  and  6   ). The water pump  322  may be connected to an irrigation tubing to pump water from the reservoir, circulate water within the reservoir  304 , pump water to a water chiller  334 , and back to the reservoir  304 . 
     Other devices, such as a water filter, reverse osmosis system, etc., can be added to the system  300 . As the water/nutrient solution level decreases within the reservoir  304  over time when the plants grow, the water/nutrient solution can be replenished from various methods. The water level may not need to be replenished when using the system  300  for propagation or for plants that do not absorb much water within the reservoir  304 . When plants are small, regardless of whether they are seedlings or cuttings, the water/nutrient solution levels within the reservoir  304  can remain sufficient for several weeks. Many situations will require the nutrient solution to be topped off/replenished as the plants grow. The liquid nutrient solution can be refilled automatically or manually, such as premixing it in a bucket and pouring or pumping it into the reservoir  304 . A float valve  330  could also be used and hooked up to a tap or tank  1572 , shown in  FIG.  15   , keeping the water in the reservoir at the preferred level. A nutrient doser can also be hooked up and programmed to automatically replenish and maintain the nutrient, pH levels, etc. in the solution within the reservoir. Backup battery and/or energy supply (from various sources including but not limited to all kinds of renewable energy sources) can be installed in case there is a power outage for all of the automated components to remain working until the main power source turns on again. 
     Various other features are contemplated to be incorporated into the expandable hydroponic growing system that increase efficiency in this automated hydroponic growing system. For example, smart technology may be incorporated (e.g., notifications on smart devices for when the levels veer too far outside of the ideal range). 
     In some implementations, as shown in  FIG.  3   , the water pump  322  is connected via the irrigation tubing  332   b  to a water chiller  334 . As shown in  FIG.  3   , the water pump  322  connects to irrigation tubing  332   b,  which extends through a second aperture  316   c  in the flat corner wall  306   b  to the water chiller  334 . Maintaining a nutrient solution within a target temperature range can be crucial for the health of plants. The water chiller  334  can help maintain the temperature in a reservoir, specifically cooling the water (e.g., cools the water in a range of approximately 65°-75°) and returning the cooled water to the reservoir  304  via a second irrigation tubing  332   c  through a third aperture  316   b  to cool the reservoir. Similarly, in some implementations, a water heater may be connected to the water pump  332  to heat the water in the system  300  or the water heater could be placed directly in the reservoir itself. In some implementations, a system  300  may not include a water chiller or a water heater. 
     In  FIG.  3   , an air pump  320  is located outside the reservoir  304  and is connected to aeration tubing  328  which connects to the reservoir via a first aperture  314  in a side wall  310  of the reservoir  304 . In some implementations, the aperture may be approximately ⅜″ but other sizes are contemplated. The air pump  320  pumps air into the reservoir  304  and may be connected to an air diffuser or an air stone (see air stone  1578 , shown in  FIG.  15   ) in the reservoir. The air diffuser or air stone diffuses oxygen by pumping air through a stone or tube to create bubbles which infuse the water with more oxygen. The air stone is aerated via an aeration pump, tubing and connector fittings usually 3/16″, ¼″, or ⅜″, etc. The aeration tubing can be reduced down from the main line with connector fittings to ensure the desired amount of air is diffused into each reservoir which conserves energy. Additionally, to conserve energy, gauges can be installed to measure and fine tune the air pressure. 
     The components described and shown in  FIG.  3    may be used in a single unit hydroponics system (e.g., also shown in hydroponics systems  200  in  FIG.  2 A-C ) or in a multi-unit hydroponics system (e.g., hydroponics systems  400 ,  500 ,  600  in  FIGS.  4 - 6   ). Any combination of these components may be included, depending on the desired use and processes of each system. Also, the components may be shared by reservoirs in a multi-unit system. 
     Referring to  FIG.  4   , an example hydroponics system  400  according to the present disclosure is shown. The grow reservoirs  404   a  and  404   b  are shown in a sectional view to show that components may be located inside the reservoir. The system  400  shows a single row system (e.g., row  458 ) of two units or grow reservoirs  404   a  and  404   b.  In a single row system, any number of grow reservoirs  404  may be used, and configured to connect to one another in a single row. The grow reservoirs  404   a  and  404   b  have multiple component parts connecting the grow reservoirs  404   a  and  404   b  to each other. For example, a pipe  452  is shown connecting to both grow reservoirs  404   a  and  404   b.  The pipe  452  connects to each reservoir with a water-tight seal and can vary in size. The pipes shown in  FIG.  4    are contemplated to be 4″ pipes, however, other sizes are contemplated. Systems with smaller amounts of reservoirs and smaller reservoirs may use smaller pipe and systems with larger amounts of reservoirs and larger reservoirs may use larger pipe. In some implementations, the reservoirs  404   a  and  404   b  may be connected to each other by irrigation tubing. 
     As will be described below, the single row system  400  has a shared water chiller  434  and shared float valve  430 . The grow reservoirs  404   a  and  404   b  in  FIG.  4    also have a shared water pump  422 , which is located on the outside of the reservoir in this implementation. In other implementations, the shared water pump  422  may be located on the inside of the reservoir. Water enters the system  400  through the shared float valve  430  and the shared water pump  422  pumps and pulls water to circulate the water in a loop through each of the reservoirs  404   a  and  404   b  and through the pipe  452  in the same direction in the system  400  in a closed configuration at a constant rate. 
     The water is pumped into the grow reservoir  404   b  through irrigation tubing  432   b  via an aperture  416   a  is the same amount of water pulled out of grow reservoir  404   b  through irrigation tubing  432   b  via an aperture  416   b.    
     In some implementations, the water pump  422  pulls water directly from the grow reservoir  404   a  and pumps the water through a water chiller  434  before pumping cooled water back into a different reservoir  404   b  to push the cooled water through the system  400 . The water chiller  434  is optional. In  FIG.  4   , the water chiller and associated irrigation tubing  432   c  and  432   d  is shown for illustration and attaches directly to the water pump  422  and grow reservoir  404 . 
     The water pump  422  can route water from the reservoir  404   a  to the water pump  422  and from the water pump  422  to the water chiller  434  through irrigation tubing  432   c.  After the water chiller  434  lowers the temperature of the water, the water chiller  434  can move the water through irrigation tubing  432   d  to the reservoir  404   b.  Water can then move through pipe  452  to the reservoir  404   a,  and then through the water pump and water chiller  434  again, and continue through the hydroponics system  400  in a loop at a constant rate. 
     In other implementations without the water chiller  434 , the water pump and pulls the water from the reservoir  404   a  and pumps the water directly into the reservoir  404   b.    
     The pipe  452  may be a larger pipe such as a 4″ pipe, which helps to negate the need for a separate control reservoir, which is used in systems implementing 2 or 3″ pipes. Smaller sizes of pipe/tubing, such as ½″, ¾″, 1″, 2″, and 3″, have been used in smaller systems because those sizes of pipe/tubing have been more common. A control reservoir may be a separate reservoir which houses several system components and connects system components, including but not limited to, pump timer(s) (which can be used in a flood and drain applications, etc.), float valve(s), nutrient injector(s), reverse osmosis and/or other water filter(s), water chillers, water heaters, etc. 
     In  FIG.  4   , the system  400  can include a float valve  430  (as described in detail in  FIG.  3   ) in one grow reservoir  404   a  to bring water into the system  400 , which is a shared component for the entire system  400 . In other words, the reservoir  404   b  may not have a second float valve  430 . 
     The system  400  in  FIG.  4    also includes an air pump  420  located on the outside of the grow reservoir  404 . The air pump  420  is a shared component in the system and pumps air via aeration tubing  428  into a reservoir(s) (shown here entering into reservoir  404   b  at aperture  414   b  and into reservoir  404   a  at  414   a ), which pumps oxygen into the water that moves through the system  400 . 
     The hydroponics system  400  also includes a drain out system. The drain out system facilitates water drainage from a side wall (e.g., side wall  410   a  and side wall  410 ) or a bottom wall (not shown) of the grow reservoirs  404   a  and  404   b  and is made up of several features. The drain out system includes irrigation tubing  432   e  that is connected to the grow reservoirs  404   a  and  404   b  via apertures  416   c  and  416   d,  a shut off valve  436 , and an adapter  438 . An aperture  416   c  in  FIG.  4    is shown on the side wall  410   a  of reservoir  404   a.  An aperture  416   d  in  FIG.  4    is shown on the side wall  410   b  of grow reservoir  404   b.  Other configurations for a drain out are contemplated. Each row may be connected with connector fittings, such as tees, elbows and a shutoff valve. When the drain out valve is shut off, the water must flow through the apertures of the system. In some implementations, one shut off valve for each row of reservoirs allows for individual rows to be emptied one at a time which is beneficial for larger applications. 
     The adapter  438  shown in  FIG.  4    may be used as a tubing to hose adapter to move water from the grow reservoirs  404   a  and  404   b  through a garden hose or other type of hose or tubing (not shown), either by draining or pumping. The adapter  438  may be male or female. For example, the adapter  438  may be a male garden hose to tubing (e.g., ¾′, ½″, 1″, etc.), female garden hose to tubing, or both a male garden hose to tubing and a female garden hose to tubing. 
     Referring to  FIG.  5   , an illustration of an example hydroponics system  500  according to the present disclosure is shown. The grow reservoirs  504  are shown in a sectional view to show components that may be located inside the reservoir. 
     The system  500  shows a double row layout (e.g., two rows  558  and  560 ), each row with three units or grow reservoirs  504   a - f.  In the double row layouts, two rows of grow reservoirs  504  may be used, with any number of grow reservoirs. For example, in another implementation, two rows may be used with four grow reservoirs in each row, for a total of eight grow reservoirs in the hydroponics system. In another example, there may be two rows of grow reservoirs, with six grow reservoirs in each row for a total of twelve grow reservoirs. In yet another example, there may be two rows having ten grow reservoirs. The grow reservoir layouts are expandable and configurable. 
     The grow reservoirs  504   a - f  have multiple component parts connecting the grow reservoirs  504   a - f  to each other. For example, the pipe  552   a  is shown connecting to both grow reservoir  504   a  and grow reservoir  504   b.  The pipe  552   b  is shown connecting to both grow reservoir  504   b  and grow reservoir  504   c.  The pipe  552   c  is shown connecting to both grow reservoir  504   c  and grow reservoir  504   d.  The pipe  552   d  is shown connecting to both grow reservoir  504   d  and grow reservoir  504   e.  The pipe  552   e  is shown connecting to both grow reservoir  504   e  and grow reservoir  504   f.  The pipe  552   f  is shown connecting to both grow reservoir  504   f  and grow reservoir  504   a.    
     The pipes  552   a - f  connect to the reservoirs  504   a - f  with a water-tight seal and can vary in size. The pipes  552   a - f  shown in  FIG.  5    are contemplated to be 4″ pipes, however, other sizes are contemplated. 
     As will be described below, the double row system  500  has a shared water pump  522 , a shared water chiller  534 , and a shared float valve  530 . The shared water pump  522  is located on the outside of the reservoirs  504  in this implementation. The shared water pump  522  pulls and pushes water to circulate the water in a loop in the system  500  in a closed configuration in the same direction between the reservoirs  504   a - f  at a constant rate. In the implementation in  FIG.  5   , the water pump  552  directly pulls water from the water pipe  552   f  and pushes water directly into the pipe  552   c  through irrigation tubing  532   a  and  532   b.    
     Specifically, the water can move from the water pump  522  to a pipe  552   c  to a reservoir  504   c  then via pipe  552   b  to reservoir  504   b,  and then through pipe  552   a  to reservoir  504   a  and back to pipe  552   f  to return to the water pump  522 . The water can also move through the other row in the same motion. Specifically, the water can move from the water pump  522  to a pipe  552   c  to a reservoir  504   d  then via pipe  552   d  to reservoir  504   e,  and then pipe  552   e  to reservoir  504   f  and back to pipe  552   f  to return to the water pump  522 . The water continues through the system  500  in a loop at a constant rate. To conserve, energy, a timer can also be used with the water pump to control the length of time to water pump is on and circulating the water through the system. 
     The water that is pushed travels the same distance as the water that is pulled. Pulling the water from one pipe (e.g., pipe  552   f ) and pushing it to another pipe (e.g., pipe  552   c ) allows for the volume of water to be pulled from multiple reservoirs and distributed to multiple reservoirs instead of one reservoir. This movement of the water allows for the difference in water level height to be minimal between the reservoir that the water is being pushed into and the reservoir where the water is being pulled out. 
     The larger diameter pipe that is used to connect the reservoirs also allows for this difference in water level height to be minimal. The larger diameter pipe, such as a 4″ or greater permits more water to flow which keeps the water level height to remain close to constant even for the reservoirs that have the water being pulled out of and the reservoirs that have the water being pushed into. The smaller the pipe that is used to connect larger amounts of reservoirs and larger reservoirs, the greater the difference of the water level that there will be between the reservoirs that have water being pushed into and the reservoirs that have water being pulled out of. 
     In larger applications, it is beneficial to use larger diameter pipes to connect the different reservoirs for the water level height to remain consistent between the reservoirs that have the water being pulled from the reservoirs and the reservoirs that have the water being pushed into the reservoirs. The water pumped into a first pipe (e.g., pipe  552   c ) from the water pump  522  is the same amount of water pulled out of a second pipe (e.g., pipe  552   f ). For example, all the water traveling through the pipes  552   a - f  and reservoirs  504   a - f  travels the same distance. Different configurations of rows with various amounts of reservoirs can be put together with growing reservoirs (reservoirs with lids that have apertures for plants). If a vertical system is desired and/or a system that uses rolling rows to eliminate aisles and increase the growing space, then the different growing rows can be connected together using control reservoirs (e.g.,  FIGS.  8 - 14   ). 
     In some implementations, the water pump  522  pumps and pulls water directly into reservoirs  504 . In some implementations, the water pump  522  pulls water directly from a pipe  552   f  and through a shared water chiller  534 . The water pump  522  routes water from pipe  552   f  to the water chiller  534  via a first irrigation tubing, and after the water chiller  534  lowers the temperature of the water, the water chiller  534  can move the water via a second irrigation tubing to the pipe  552   c.  In some implementations, the chilled water can be moved directly into a reservoir. In  FIG.  5   , the system  500  can include a float valve  530  in one grow reservoir (e.g., grow reservoir  504   f ), by way of example, and is a shared component for the entire hydroponics system  500 . In other words, the grow reservoirs  504   a - e  do not necessarily require additional float valves. In other implementations, there may be multiple float valves. 
     The system  500  in  FIG.  5    also includes an air pump  520  located on the outside of the grow reservoir  504   d.  In some implementations, the air pump  520  may be located inside the grow reservoir  504  (see, e.g.,  FIG.  3   ). The air pump  520  is a shared component in the system and pumps air via aeration tubing  528  into a grow reservoir, which pumps oxygen into the water that moves through the grow reservoirs  504   a - f  in the system  500 . The aeration tubing  528  may be various sizes, such as 3/16″, ¼″, ⅜″, etc. and is connected to each grow reservoir via an aperture (e.g., aperture  514 ). 
     A shared drain out system for the rows  558  and  560  of reservoirs  504   a - f  in the hydroponics system  500  is shown. The shared drain out system includes irrigation tubing  532   c  connecting to the grow reservoirs  504   a - f  via an aperture (e.g., aperture  516 ) in sidewalls of the reservoirs  504   a - f,  a shut off valve  536 , and an adapter  538  to facilitate water drainage from a side or a bottom wall of the reservoirs  504   a - f.  The irrigation tubing  532   c  is shown connected to all the reservoirs  504   a - f.  Other configurations for a drain out system are contemplated. For example, some systems may have a drain out system for each row of grow reservoirs. 
     The adapter  538  shown in  FIG.  5    may be used as a tubing to hose adapter to move water from the reservoirs  504   a - f  through a garden hose or other type of hose or tubing, either by draining or pumping. The adapter  538  may be male or female. For example, the adapter  538  may be a male garden hose to tubing (e.g., ¾′, ½″, 1″, etc.), female garden hose to tubing, or both a male garden hose to tubing and a female garden hose to tubing. 
     Referring to  FIGS.  6 A and  6 B , illustrations of example hydroponics system  600  according to the present disclosure are shown.  FIG.  6 A  is a top view of the hydroponics system  600 .  FIG.  6 B  is a perspective view of the hydroponics system  600 . The grow reservoirs  604  are shown in  FIG.  6 B  in a sectional view to show that components may be located inside the grow reservoir. The hydroponics system  600  shows a multi-row system, including four rows, each row with four units or grow reservoirs  604 . The system  600  has the same component parts as the system  500  shown in  FIG.  5   , in a larger scale. In the multi-row systems, any number of rows and units of grow reservoirs  604  may be used. For example, in another implementation, four rows may be used with four grow reservoirs in each row, for a total of sixteen grow reservoirs in the hydroponics system. In another example, there may be five rows of grow reservoirs, with three grow reservoirs in each row for a total of fifteen grow reservoirs. In yet another example, there may be seven rows, with three rows having three grow reservoirs and four rows having only two grow reservoirs. The grow reservoir layouts are expandable and configurable. 
     Referring to  FIG.  6 A , the grow reservoirs  604  have multiple component parts connecting the grow reservoirs  604  to each other. These component parts are illustrated in  FIG.  6 A  by a connectivity line  682 . Such connectivity may include, for example, a plurality of pipes  652 , each pipe connecting two grow reservoirs  604  (e.g., pipe  652   a  connects grow reservoir  604   a  to grow reservoir  604   b,  pipe  652   b  connects grow reservoir  604   b  to grow reservoir  604   c,  and pipe  652   c  connects grow reservoir  604   c  to grow reservoir  604   d ), as shown in  FIG.  6 B . Water moves through the grow reservoirs  604  and pipes  652  in the hydroponics system  600  through the path of the connectivity line  682 . 
     Similar to other examples in this disclosure, the multi-row system  600  may optionally include a shared water pump  622 , a shared water chiller  634 , and a shared float valve  630 . The shared water pump  622  is located on the outside of the reservoirs  604  in this implementation. The shared water pump  622  circulates the water in a loop in the system  600  in a closed configuration between the reservoirs  604  at a constant rate. The water pumped into a first pipe from the water pump  622  is the same amount of water pulled out of a second pipe. For example, all the water traveling through the pipes  652  and grow reservoirs  604  travels the same distance. The pipes  652  may be 4″ pipes, which helps to negate the need for a separate control reservoir, which is used in other hydroponic systems. 
     In  FIG.  6 B , the hydroponics system  600  may include a shared float valve  630  in only one reservoir  604   d  for the entire hydroponics system  600 . 
     The hydroponics system  600  in  FIG.  6 A  also may include a shared air pump  620  located on the outside of the reservoirs  604 . In some implementations, the air pump  620  may be located inside the reservoir  604 . The air pump  620  is a shared component in the system and pumps air via shared aeration tubing  628  connected to each reservoir  604 . The air pump  620  pumps oxygen into the water that moves through the reservoirs  604  in the hydroponics system  600 . 
     A shared drain out system in the hydroponics system  600  is shown. The shared drain out system includes irrigation tubing  632  connecting to reservoirs  604  via apertures (e.g., aperture  616   d ), a shut off valve  636 , and an adapter  638  to facilitate water drainage from a side or a bottom wall of the reservoirs  604 . Other configurations for a drain out system are contemplated. The adapter  638  shown in  FIG.  6 B  may be used as a tubing to hose adapter to move water from the reservoirs  604  through a garden hose or other type of hose or tubing, either by draining or pumping. The adapter  638  may be male or female. For example, the adapter  638  may be a male garden hose to tubing (e.g., ¾′, ½″, 1″, etc.), female garden hose to tubing, or both a male garden hose to tubing and a female garden hose to tubing. 
       FIG.  7    illustrates example hydroponic systems  700 . As shown and described in the examples herein, the grow reservoirs  704  in the hydroponic systems may be configured in various arrangements in one or both vertical and horizontal layouts. In  FIG.  7   , top views of reservoirs are shown as connected in horizontal layouts. The reservoirs  704  may be configured as a single unit (e.g., reservoir  790 ), in a single row layout (e.g., reservoirs  792 ), in double row layouts (e.g., reservoirs  794 ), and in multiple row layouts (e.g., reservoirs  796 ). Any number of layouts may be configured by positioning the reservoirs in desired locations. The multi-row layouts can include the double row layouts, and some double layouts and multi-row layouts are rolling layouts, where each row is movable and can move independently from other rows. 
     The reservoirs  704  may be configured to connect to each other via shared piping, tubing, and/or other components, and the components of attachment may be in located in various arrangements in any given hydroponic system  700 . For example, if reservoirs  704  are connected via piping, there may be one pipe located between and connecting two reservoirs. In the same or a different example, there may be aeration tubing connected to one or more reservoirs. In the same or a different example, there may be a drain out system connected to one or more reservoirs. 
     A connectivity line  767  is shown to illustrate the connectivity of the reservoirs to each other in the closed configuration of reservoirs  704 . The connectivity line  767  represents various components connecting the reservoirs, such as the shared water or air sources for constant water flow or aeration (e.g., pipes, tubing) or other shared components between the reservoirs  704  in a system  700 . 
     Referring to  FIG.  8   , an illustration of an example hydroponics system  800  according to the present disclosure is shown. The grow reservoirs  804  and a control reservoir  870  are shown in a sectional view to show that components may be located inside the reservoir. The system  800  shows that the reservoirs  804   a - d  may be configured in rolling double rows (e.g. row  858  and row  860 ), using as many units in each of the rows as desired, to eliminate and open aisles in a grow facility. The term “rolling” refers to the movability of the rows. Each row may be moved independent from another row. For example, the units or reservoirs  804   a  and  804   b  are connected to each other (e.g., by pipe  852   a ), or reservoirs  804   c  and  804   d  are connected to each other (e.g., by pipe  852   b ), and may be placed on wheels in order to be manually moved together by a user in a grow facility. Other methods of moving the reservoirs are contemplated (e.g., the rows may be electronically moved on platforms). 
     The movability of the system  800  is configured to account for the fact that 4″ pipes do not have flexibility in a rolling system. For example, 4″ pipes may be implemented in a row  858  of reservoirs  804   a  and  804   b,  where the reservoirs can be moved together on one platform with wheels. However, if a row  860  of reservoirs  804   c  and  804   d  are on a separate platform on wheels, the reservoirs  804   c  and  804   d  in row  860  cannot be connected to the reservoirs  804   a  and  804   b  by 4″ pipes. Therefore, a control reservoir  870  is incorporated into the system  800  to house certain system components (e.g., the water pumps  822   a  and  822   b,  a float valve  830 ). The control reservoir  870  is shown connected to each of the double rolling rows  858  and  860  via irrigation tubing  832  and may be moved separately on its own platform from the reservoirs in rows  858  and  860 . 
     In the implementation shown in  FIG.  8   , there are three water pumps  822   a,    822   b,  and  822   c  in the control reservoir  870 . There is one pump to pump water to each of the double rows (e.g., a water pump  822   a  for row  858  and a water pump  822   b  for row  860 ) or grow reservoirs, and one water pump  822   c  solely to pump water to the water chiller. 
     As shown, the reservoirs  804   a  and  804   b  in each of the rows  858  and  860  are connected to each other by pipes  852   a  and  852   b  to provide for water flow through the reservoirs. The pipes  852   a  and  852   b  are contemplated to be  4 ″ pipes, which however, other sizes are contemplated. 
     An overflow tubing  832   h  is connected to each row  858  and  860  at the top of grow reservoirs  804   b  and  804   d  at a predetermined water level. The overflow tubing  832   h  may be ¾″, 1″, etc. A filter or screen (not shown) may be located at the entrance of the overflow tubing  832   h,  and a tee fitting (not shown) connects the overflow tubing  832   h  to the control reservoir  870 . 
     As shown, the water pump  822   a  is a shared water pump for reservoirs  804   a  and  804   b  in row  858  and the water pump  822   b  is a shared water pump for reservoirs  804   c  and  804   d  in row  860 . Each of the shared water pumps  822   a  and  822   b  pumps (via irrigation tubing  832   a  and  832   c,  respectively) and pulls water (via irrigation tubing  832   b  and  832   d,  respectively) to circulate the water in a loop for each respective row of reservoirs in a closed configuration between the reservoirs at a constant rate. In some implementations in the various systems, as shown in  FIG.  8   , feed tubing  832   a  and  832   c  contains a check valve  886   a  and  886   b  or similar device to prevent debris from flowing backwards into the water pumps  822   a  and  822   b.    
     In the implementation in the double rolling rows shown in system  800 , the water pump  822   a  pumps water through irrigation tubing  832   a  from the control reservoir  870  to the reservoir  804   b,  through the pipe  852   a,  to the reservoir  804   a,  and through irrigation tubing  832   b  back to the control reservoir  870 . The water pumped into the first reservoir  804   b  from the water pump  822   a  is the same amount of water pushed out of the reservoir  804   a  via irrigation tubing. All the water traveling through each row typically travels the same distance as the other rows and is constantly mixing with the water in all rows as the water returns to the control reservoir and is pumped out again into another random row. 
     Similarly, the water pump  822   b  pumps water through irrigation tubing  832   c  from the control reservoir  870  to the reservoir  804   d,  through the pipe  852   b,  to the reservoir  804   c,  and through irrigation tubing  832   d  back to the control reservoir  870 . The water pumped into the reservoir  804   c  from the water pump  822   b  is the same amount of water pulled out of the reservoir  804   c  via irrigation tubing. For example, all the water traveling through the pipe  852   b  and reservoirs  804   c  and  804   d  travels the same distance. 
     In the implementation shown in  FIG.  8   , the temperature of the water in the control reservoir  870  (and ultimately, the entire system  800 ) may be lowered in a water chiller  834 . The water moves from the control reservoir  870  via the water pump  822   c  and an irrigation tubing  832   e  to the water chiller  834 . After the water chiller  834  lowers the temperature of the water, the water chiller  834  can move the water back through irrigation tubing  832   f  to the control reservoir  870 . The water can then move from control reservoir  870  to the rows  858  and  860  by the water pumps  822   a  and  822   b  in a loop at a constant rate. 
     The system  800  in  FIG.  8    also includes an air pump  820  located on the outside of the reservoir  804 . In some implementations, the air pump  820  may be located inside the reservoir  804 . The air pump  820  is a shared component in the system and pumps air via multiple aeration tubings  828   a  and  828   b  into the reservoirs  804   a - b  and  804   c - d,  respectively, which pumps oxygen into the water that moves through the system  800 . In other implementations, there is only one shared irrigation tubing for the system. 
     In the implementation shown in  FIG.  8   , the drain out system of the hydroponics system  800  may be performed row by row (as shown and described in  FIG.  4   ) or even unit by unit in some implementations, as the drain out of each row does not need to be performed at the same time. In cases where a double rolling row system has a large number of reservoirs  804  in each row, it may not be feasible to perform a drain out of every row at the same time or day. Therefore, this implementation may include multiple drain out system capabilities per row. In  FIG.  8   , there is one drain out system per each row (e.g., water can be drained out from a side or a bottom wall (e.g., side wall  810   a  of reservoirs  804   c  and side wall  810   b  of reservoir  804   d  through apertures  816   a  on reservoir  804   c  and aperture  816   b  on reservoir  804   d  for row  860  through irrigation tubing  832   g.  The drain out system may include shut off valves and adapters (e.g., adapter  838 ) to facilitate water drainage from the irrigation tubing  832   d  and through the control reservoir  870  and the shut off valve  836   d.  Other configurations for a drain out system are contemplated. 
     In other implementations, there may be additional control reservoirs added to the system  800  as the number of units or grow reservoirs  804  increase. The control reservoirs in the disclosed systems may be moved in different configurations, as desired. For example, in some implementations, two control reservoirs may be included in a double row system. Each control reservoir may be each located at the end of or adjacent to each row, or both control reservoirs may be located in the same row, or the control reservoirs may be located over or underneath the one or two rows of grow reservoirs in a vertical layout. More or larger control reservoirs are needed in a system when expanding the number of grow reservoirs in the rolling rows or vertical rows of any given system. In some implementations, when there is a larger amount of grow reservoirs, the control reservoirs can be made larger or more control reservoirs can be linked together underneath each row or in other horizontal or vertical configurations in a separate location away from but connected to the grow reservoir configurations. 
       FIGS.  9 A-C  are illustrations of top views of grow reservoirs  904  and control reservoirs  970  in example hydroponics systems  900  according to the present disclosure. The control reservoirs  970  are configured in a single horizontal row  971  and positioned in proximity to “rolling” rows  958  of the reservoirs  904  in  FIGS.  9 A-C . The control reservoirs  970  may be configured and arranged in various layouts to connect to each row  958  of reservoirs in the hydroponics systems  900 . For example, each control reservoir  970  may have a water pump that is accessible to each corresponding row  958  of reservoirs via irrigation tubing in closest proximity to each control reservoir  970 . 
     In some implementations, there may be any number of horizontal multiple rows of reservoirs, and there may or may not be control reservoirs incorporated into a hydroponics system  900 . 
     A connectivity line  967  is shown to illustrate the connectivity of the grow reservoirs to each other in each row in the closed configuration of reservoirs  904 . The connectivity line  967  represents components connecting the reservoirs, such as the shared water or air sources for constant water flow or aeration (e.g., pipes, tubing) or other shared components between the reservoirs  904  in a system  900 . Each individual row can be connected to a control reservoir in a configuration where the control reservoir is located in a separate area from but connected to the grow reservoirs as shown in  FIGS.  9 A-C , or in a configuration where the control reservoirs may be located underneath a row of grow reservoirs (as shown in  FIG.  14   ). The individual rows of growing reservoirs  904  can be moved back and forth in unison for a set distance (e.g., 4′) to create an aisle space wherever needed which can eliminate all of the aisles but one. As a result, creating aisle space only where needed significantly increases the total growing space. In the reservoir configuration shown in  FIGS.  9 A-C , the control reservoirs  970  may be connected to the rows of reservoirs and located in a separate area away from the grow reservoirs. In other implementations, the control reservoirs  970  may be located closer to the rows of reservoirs, and in some cases, located above, in, or under the rows of grow reservoirs. 
     The rows  958  in  FIGS.  9 A-C  show rolling rows of reservoirs  904 . The reservoirs  904  in each row  958  are connected to each other, for example, on a platform on wheels, and not directly connected to the reservoirs  904  in any adjacent rows. Each rolling row  958  of reservoirs  904  may be moved independently from the other rows  958  to alleviate the need for aisles between every single row  958  of reservoirs in the hydroponics system  900 . By eliminating aisles in between every row  958 , when a user needs access to each row  958 , the user moves the rolling rows  958  to require only one aisle  988  adjacent to one row  958  of reservoirs  904 . 
       FIGS.  9 A-C  show three examples of how rows  958  may be moved. For example, in  FIG.  9 A , when a user needs to access row  958   a,  for example, the user can move all the rows  958 , including  958   a,  adjacent to one another, and make an aisle  988  for the user to walk down and access each reservoir  904  and its components in row  958   a.    
     For example, in  FIG.  9 B , when a user needs to access row  958   a,  for example, the user can move all the rows  958 , including  958   a,  adjacent to one another, and make an aisle  988  for the user to walk down and access each reservoir  904  and its components in in row  958   a.    
     For example, in  FIG.  9 C , when a user needs to access row  958   a,  for example, the user can split the rows  958 , including  958   a,  into two groups adjacent to one another, and make an aisle  988  in the center of all of the hydroponics system  900  for the user to walk down and access each reservoir  904  and its components in row  958   a.    
       FIG.  10    is an illustration of an example hydroponics system  1000  according to the present disclosure. Multiple grow reservoirs  1004  and control reservoirs  1070  are shown in a sectional view to show that components may be located inside the reservoir. 
     The system  1000  shows that the grow reservoirs  1004  may be configured in multiple “rolling” horizontal rows, as shown in  FIGS.  9 A-C , using as many units as desired, to eliminate and open aisles in a grow facility. The system  1000  is “rolling” in that the units or grow reservoirs  1004  may be placed on wheels in order for each row to be moved together in a grow facility. The system  1000  is configured to account for the fact that 4″ pipes do not have flexibility in a rolling system. For example, a 4″ solid pipe  1052   b  may be implemented in a row  1058  of reservoirs  1004   a  and  1004   b,  where the reservoirs can be moved together on one platform with wheels. However, if a row  1060  is on a separate platform on wheels, the reservoirs in row  1058  cannot be connected to the reservoirs in row  1060  by 4″ pipes. Therefore, at least one control reservoir (e.g., control reservoir  1070   a ) may be incorporated into the system  1000  to house certain system components to provide shared components for multiple rolling rows of reservoirs. For example, in some implementations, it may be advantageous to have one control reservoir  1070  per every four grow reservoirs  1004 . In system  1000 , because there are eight grow reservoirs in the system  1000 , two control reservoirs  1070   a  and  1070   b  are added. Additional control reservoirs and grow reservoirs may be incorporated into the system  1000 . 
     The disclosed configurations eliminate aisle space in the system  1000 . Where other systems may require an aisle between each row, in system  1000 , the rows on wheels may be moved closer together and aisle space may be reduced to as low as one aisle, where the rows can be moved together to allow a user to walk down one aisle in between the rows for working on the reservoirs. For example, if a user needs access to the second row  1060 , the user can move the rows on wheels to create an aisle space in between rows  1058  and  1060 . If the user only needs access to row  1058 , the user can move row  1058  close to row  1060  and access row  1058  from the other side. By eliminating aisles, there is more growing space in a facility, and because of the extra space for more rows of reservoirs. 
     In the implementation in  FIG.  10   , the control reservoirs  1070   a  and  1070   b  are connected to four double rolling rows (by way of example) via irrigation tubing  1032 . The control reservoirs  1070   a  and  1070   b,  connected via pipe  1052   a  may be moved separately from the rows  1058 ,  1060 ,  1062 , and  1064  of the grow reservoirs. 
     As shown in  FIG.  10   , the control reservoirs  1070   a  and  1070   b  are connected to each other by pipe  1052   a.  In other implementations, the control reservoirs may be connected to each other by irrigation tubing. 
     In other implementations, more reservoirs may be added or removed. In implementations where the system  1000  is scaled up with additional reservoirs  1004 , additional control reservoirs  1070  may be needed. For example, in a system which includes eight rows with eight reservoirs in each row (a total of 64 reservoirs), 16 control reservoirs may be required. In some implementations, instead of adding more control reservoirs to increase the volume of water to correlate with the extra grow reservoirs, larger control reservoirs can be used. control reservoirs. The reservoirs  1004  in the rows may connect to one another by pipes, and the control reservoirs  1070  may connect to one another by pipes, and the reservoirs  1004  may connect to the control reservoirs  1070  by irrigation tubing. The use of irrigation tubing in between the control reservoirs  1070  and the reservoirs  1004  allows mobility of each row, which may be on wheels, so that each row can be moved. 
     In the implementation shown in  FIG.  10   , there are multiple water pumps in the control reservoirs  1070   a  and  1070   b.  There may be more than one shared water pump to maintain the water level height in the reservoirs throughout the system. The water pumps  1022   a  and  1022   b  in control reservoir  1070   a  pump water for each of the rolling rows  1058  and  1060 , respectively. The water pumps  1022   d  and  1022   e  in control reservoir  1070   b  pump water for each of the rolling rows  1062  and  1064 , respectively. There is a water pump  1022   c  in control reservoir  1070   a  to pump water from the control reservoirs  1070   a  to the water chiller  1034  and to the control reservoir  1070   b.    
     As shown, the reservoirs  1004  (e.g., reservoirs  1004   a  and  1004   b ) in each of the rows (e.g. row  1058 ) are connected to each other by pipes (e.g., pipe  1052   b ) to provide for water flow through the reservoirs from and to each of the row&#39;s respective water pumps. The pipes  1052   b  are contemplated to be 4″ pipes, which however, other sizes are contemplated. 
     As shown, the shared water pump  1022   a  is a shared water pump for reservoirs  1004   a  and  1004   b  in row  1058 . The shared water pump  1022   a  pumps and pulls water to circulate the water in a loop in a closed configuration between the reservoirs  1004   a  and  1004   b  at a constant rate. This water flow is the same as the water flow in other rolling rows (e.g., rows  1060 ,  1062 , and  1064 ) in the system  1000 , and in other similar figures (e.g.,  FIG.  8   ). 
     In the implementation in the rolling rows shown in system  1000 , the water pump  1022   a  pumps water through irrigation tubing  1032   a  from the control reservoir  1070   a  to the reservoir  1004   a.  Water then moves through the pipe  1052   b,  to the reservoir  1004   b,  and through irrigation tubing  1032   b  back to the control reservoir  1070   a.  The water pumped into the first reservoir  1004   a  from the water pump  1022   a  is substantially the same amount of water pulled out of the reservoir  1004   b  via irrigation tubing  1032   b.  All the water in row  1058  that is traveling through the pipe  1052   b  and reservoirs  1004   a  and  1004   b  can travel the same distance as the water in the other rows  1060 ,  1062 ,  1064 . 
     For example, the water pump  1022   b  pumps water through irrigation tubing  1032   c  from the control reservoir  1070   a  to the reservoir  1004   c.  Water then moves through the pipe  1052   c,  to the reservoir  1004   d,  and through irrigation tubing  1032   d  back to the control reservoir  1070   a.  The water pumped into the reservoir  1004   c  from the water pump  1022   c  is substantially the same amount of water pulled out of the reservoir  1004   d  via irrigation tubing  1032   d.  For example, substantially all the water traveling through the pipe  1052   c  and reservoirs  1004   c  and  1004   d  travels substantially the same distance. Similarly, the water flow from water pumps  1022   d  and  1022   e  pump water from the control reservoir  1070   b  to the reservoirs  1004  in rows  1062  and  1064  similarly to the water pumps  1022   b  and  1022   c.    
     In  FIG.  10   , there is a float valve shown in control reservoir  1070   b . In some implementations, there may be a shared float valve in one or more reservoirs. In other implementations, there may not be a shared float valve in one or more reservoirs. 
     An overflow irrigation tubing  1032   e  is connected to reservoirs  1004   a  and  1004   c  and prevents the water level in the growing reservoirs  1004   a - d  from getting too high and will drain the water back to the control reservoir  1070   a.  There may be a screen located at the entrance of the overflow tubing  1032   e  to filter out any debris as the water exits the reservoir into the overflow tubing. The overflow tubing from multiple reservoirs can be combined with a connector fitting as the excess water returns back to the control reservoir. 
     The irrigation tubing  1032   f  connects the bottom of the control reservoirs and is part of a drain out system where the system  1000  can be drained out from multiple rows of reservoirs at one time.  FIG.  10    also shows that one reservoir or row of reservoirs (e.g., row  1064 ) may be drained individually (e.g., valve  1036   b  and a tubing to hose adapter (not shown) located in the irrigation tubing). 
     In the implementation shown in  FIG.  10   , the drain out system of the hydroponics system  1000  may also be performed row by row (as shown and described in  FIG.  4   ) as the drain out of each row does not need to be performed at the same time. In cases where a rolling row system has a large number of reservoirs  1004  in each row, it may not be feasible to perform a drain out of every row at the same time or day. Therefore, this implementation may include multiple drain out system capabilities per row. In  FIG.  10   , there is one drain out system per each row (e.g., water can be drained out from a side or a bottom wall (e.g., side wall  1010  of a reservoirs  1004   e  and  1004   e  through apertures  1016   a  and  1016   b,  by example, in row  1064 ) through irrigation tubing  1032   i.  The drain out system may include a shut off valve and tubing to hose adapters located in tubing  1032   i  to facilitate water drainage from the irrigation tubing  1032   i.  When the tubing to hose adapters are connected, water can circulate through the system continuously. When the hose to tubing adapters are disconnected, another hose or tubing can be connected to completely drain the water out of the row. Other configurations for a drain out system are contemplated. 
     In the implementation shown in  FIG.  10   , the temperature of the water in the control reservoirs  1070   a  and  1070   b  may be lowered in a water chiller  1034 . The water moves from the control reservoirs  1070  via an irrigation tubing  1032   g  to the water chiller  1034 . After the water chiller  1034  lowers the temperature of the water, the water chiller  1034  can move the water through irrigation tubing  1032   h  to the control reservoir  1070   b.  The water can then move from control reservoir  1070   b  to the rows  1062  and  1064  by the water pumps  1022   d  and  1022   e  in a loop at a constant rate. 
     The system  1000  in  FIG.  10    also includes an air pump  1020  located on the outside of the reservoirs  1004 . The air pump  1020  is a shared component in the system and pumps air via aeration tubing  1028  into the reservoirs  1004  which pumps oxygen into the water that moves through the system  1000 . 
     Referring to  FIG.  11   , an illustration of an example hydroponics system  1100  according to the present disclosure is shown. The grow reservoirs  1104   a - d  and a control reservoir  1170  are shown in a sectional view to show that components may be located inside the reservoir. The system  1100  shows that the reservoirs  1104   a - d  may be configured in a vertical layout. The vertical layouts may include using as many units as desired, to create space and eliminate open aisles in a grow facility. In some implementations, the vertical layout may be rolling rows on wheels. In some implementations, the vertical layouts may be combined with horizontal layouts (shown and described in  FIG.  12   ). 
     In the hydroponics system  1100  shown in  FIG.  11   , a control reservoir  1170  is located at the bottom of the hydroponics system  1100 . The control reservoir  1170  is shown to support four reservoirs  1104   a - d  with several shared components (e.g., a shared water pump  1122 , a shared float valve  1130 , etc.). A shared air pump  1120  is positioned outside the reservoirs and aeration tubing  1128  delivers air to each of the reservoirs  1104   a - d.  A water pump  1122   b  is located in the control reservoir  1170  to pump water to an optional shared water chiller  1134  located outside the control reservoir  1170  to lower the temperature of the water. In some implementations, the hydroponics system  1100  may not include a water chiller  1134 . 
     As shown in this implementation, one control reservoir  1170  may be used for up to four reservoirs. Additional or larger control reservoirs may be used if there are more than four reservoirs in a system. However, depending on the configuration of the system components, more or less control reservoirs may be used. 
     As shown in  FIG.  11   , a water pump  1122   a  pumps water from the control reservoir  1170  to grow reservoir  1104   a  via irrigation tubing  1132   a  to circulate water from the water pump  1122   a  from the control reservoir  1170  to the four reservoirs  1104   a - d  and back to the control reservoir  1170 . The water flow moves from the irrigation tubing  1132   a  to the reservoir  1104   a  through irrigation tubing  1132   b  to the reservoir  1104   b  through irrigation tubing  1132   c,  to the reservoir  1104   c  through irrigation tubing  1132   d,  to the reservoir  1104   d  through irrigation tubing  1132   e  to the control reservoir  1170 . 
     Each of the growing reservoirs  1104   a - d  has a total drain out tube  1190  with a shut off valve  1136   a  (shown for all reservoirs  1104   a - d  and labeled for reservoir  1104   a ) that is connected to irrigation tubing (e.g., irrigation tubing  1132   b ). When the shut off valve  1136   a  is opened, the reservoir (e.g., reservoir  1104   a ) can drain completely into a reservoir (e.g., reservoir  1104   b ) below it. 
     As shown in  FIG.  11   , the control reservoir  1170  may have a drain out system and can empty all of the water out of the system completely. Water can be drained out from a side or a bottom wall (e.g., side wall  1110  of control reservoir  1070  through apertures  1016   b ) through irrigation tubing  1032   g.  The drain out system in the control reservoir  1070   b  may include a shut off valve  1136   b  and an adapter to facilitate water drainage from the irrigation tubing  1032   g.  Other configurations for a drain out system are contemplated. For example, in a vertical layout that also incorporates a horizontal layout, there may be drain out systems that are shared across a row of reservoirs and down a vertical column of reservoirs. 
     Also, each growing reservoir  1104   a - d  has an overflow exit  1192  (shown for each reservoir  1104   a - d,  and labeled for reservoir  1104   a ) that starts with a filter or screen at the top of the water level in each reservoir, and fittings connected the overflow tubing as the excess water drains from all of the growing reservoirs and into the control reservoir  1170  on the lowest level via irrigation tubing  1132   f.    
     Referring to  FIG.  12   , a combination of vertical and horizontal layouts of grow reservoirs  1204  are implemented in a hydroponics system  1200 . The reservoirs  1204  and control reservoirs  1270  are shown in a sectional view to show that components may be located inside the reservoir. In some implementations, systems  1200  with vertical and horizontal layouts may include rolling rows of reservoirs. 
     In  FIG.  12   , a row  1258  of four grow reservoirs  1204  are located over a row  1260  of four grow reservoirs  1204 , which are located over a row  1262  of controls reservoirs  1270 . In some implementations, the system  1200  may include lights or hoods  1256  over the reservoirs  1204 . 
     As shown, the grow reservoirs  1204  of row  1258  are connected to each other by three pipes  1252   a,  the grow reservoirs  1204  of row  1260  are connected to each other by three pipes  1252   b,  and the control reservoirs  1270  of row  1262  are connected to each other by one pipe  1252   c.  The grow reservoirs  1204  and the control reservoirs  1270  are connected to each other by irrigation tubing  1232   a,    1232   c,  and  1232   d.    
     In  FIG.  12   , control reservoirs  1270   a  and  1270   b  are located in row  1262 . The control reservoir  1270  can house several shared components. As shown here, control reservoir  1270   a  houses water pumps  1222   a  and  1222   b  and a shared float valve  1230 ). An additional control reservoir  1270   b  is located adjacent to the control reservoir  1270   a.  Larger control reservoirs or a larger amount of control reservoirs are needed for larger grow reservoirs or a larger amount of grow reservoirs (as the volume of water in the grow reservoirs increase, the volume of water in the control reservoirs must also be increased which can be done by increasing the size of the reservoir(s) or linking more reservoirs together). A shared water chiller  1234  is optional and as shown in  FIG.  12   , is located outside the control reservoir  1270   b  to lower the temperature of the water in all the reservoirs  1204  and control reservoirs  1270 . In some implementations, the hydroponics system may not include a water chiller  1234 . 
     The number of control reservoirs may vary. In other implementations, one control reservoir may be suitable for up to four reservoirs. Additional control reservoirs may be used if there are more than four reservoirs in a system, however, depending on the configuration of the system components, more or less control reservoirs may be used as shown, the shared water pump  1222   a  is a shared water pump for all the grow reservoirs  1204  in rows  1258  and  1260 . The shared water pump  1222   a  pumps and pulls water to circulate the water in a loop in a closed configuration between the reservoirs  1204  at a constant rate. 
     In the implementation, the water pump  1222   a  pumps water through irrigation tubing  1232   a  from the control reservoir  1270   a  to the reservoir  1204   a  in row  1258 . Water then moves through the pipes  1252   a  and reservoirs  1204  of row  1258 , and through irrigation tubing  1232   b  to the grow reservoirs  1204  and pipes  1252   b  in row  1260 , and through irrigation tubing  1232   c  connected to grow reservoir  1204   b  to return to the control reservoir  1270   a.  The water pumped into the first reservoir  1204   a  from the water pump  1222   a  is substantially the same amount of water pulled out of the reservoir  1204   b  via irrigation tubing  1232   c.  All the water in row  1258  that is traveling through the pipes  1252   a  and reservoirs  1204  in row  1258  can travel the same distance as the water in row  1260 . 
     Each row of the grow reservoirs  1204  has a total overflow irrigation tubing  1290  with a shut off valve  1236   a.  Optional tubing to hose adapters (not shown) can also be located in the irrigation tubing  1290  to easily disconnect individual rows or reservoirs one at a time of needed for cleaning, harvesting, etc. When opened, the reservoirs  1204  in a row (e.g., row  1258 ) can drain completely into a reservoir below. For example, the complete drain out valve  1236   a  can empty all of the water out of the row of reservoirs (e.g., row  1258 ) completely via irrigation tubing (e.g., total overflow irrigation tubing  1290  and  1232   b ). The water can then travel down to the control reservoirs  1270   a  and  1270   b.    
     As shown in  FIG.  12   , the control reservoirs  1270  may have their own drain out system. Water can be drained from the entire system  1200  (all the grow and control reservoirs) out from a side or a bottom wall (e.g., side wall  1210  of control reservoir  1270   a  through aperture  1216 ) through irrigation tubing  1232   g.  The drain out system may include a shut off valve  1236   b  and an adapter  1238  to facilitate water drainage from the irrigation tubing  1232   g.  Other configurations for a drain out system are contemplated. 
     Also, grow reservoirs (e.g.,  1204   a  and  1204   b ) may have one or more overflow exits  1292  that starts with a filter or screen at the top of the water level, and fittings connect the overflow tubing as the excess water drains back from all of the growing reservoirs into the control reservoir  1270   a  on the lowest level via irrigation tubing  1232   d.    
     In the implementation shown in  FIG.  12   , the drain out system of the hydroponics system  1200  may also be performed row by row (as shown and described in  FIG.  4   ) as the drain out of each row does not need to be performed at the same time. In cases where a rolling row system has a large number of reservoirs  1204  in each row, it may not be feasible to perform a drain out of every row at the same time or day. Therefore, this implementation may include multiple drain out system capabilities. Other configurations for a drain out system are contemplated. 
     In the implementation shown in  FIG.  12   , the temperature of the water in the control and grow reservoirs may be lowered in a water chiller  1234 . In  FIG.  12   , the water moves from a water pump  1222   b  in the control reservoirs  1270   a  via an irrigation tubing  1232   e  to the water chiller  1234 . After the water chiller  1234  lowers the temperature of the water, the water chiller  1234  can move the water through irrigation tubing  1232   f  to the control reservoir  1270   b.  The water can then move from control reservoir  1270   b  through a pipe  1252   b  connected to control reservoir  1270   a  and be pumped up to the grow reservoirs  1204 . The water continuously mixes and flows throughout the system. 
     The system  1200  in  FIG.  12    also includes an air pump  1220  located on the outside of the control and grow reservoirs. The air pump  1220  is a shared component in the system and pumps air via aeration tubing  1228  into the reservoirs which pumps oxygen into the water that moves through the system  1200 . 
     The hydroponics system  1200  is scalable, and more rows of reservoirs and control reservoirs may be added either vertically or horizontally, in any number of configurations. 
       FIG.  13    is an illustration of an example hydroponics system  1300  according to the present disclosure. The grow reservoirs  1304  and control reservoirs  1370  are shown in a sectional view to show that components may be located inside the reservoir. A portion of this sectional view is enlarged for magnification purposes, and only a portion of each row are shown. The system  1300  illustrates that reservoirs (e.g., control reservoirs  1370   c  and  1370   d ) may be added below a rolling row of reservoirs, in addition to an independent row of control reservoirs (e.g., control reservoirs  1370   a  and  1370   b ). For purposes of simplifying the illustration, not all duplicative components are marked. 
     The system  1300  shows that the grow reservoirs  1304  may be configured in multiple “rolling” horizontal rows, using as many units as desired, to eliminate and open aisles in a grow facility. The system  1300  is “rolling” in that the units or grow reservoirs  1304  may be placed on wheels in order to be moved in a grow facility. The system  1300  is configured to account for the fact that 4″ pipes do not have flexibility in a rolling system. For example, a 4″ pipe  1352   b  may be implemented in a row  1358  of reservoirs  1304 , where the reservoirs can be moved together on one platform with wheels. However, if a row  1358  is on a separate platform on wheels, the reservoirs in row  1362  cannot be connected to the reservoirs in row  1358  by 4″ pipes. Therefore, at least one control reservoir may be incorporated into the system  1300  to house certain system components to provide shared components for multiple rows of reservoirs. For example, in some implementations, it may be advantageous to have one control reservoir  1370  per every four grow reservoirs  1304 . In system  1300 , because there are multiple reservoirs in the system  1300  (some not shown), control reservoirs  1370  are added outside the rows of grow reservoirs and additional control reservoirs are added underneath the rolling rows of grow reservoirs. Additional control reservoirs and grow reservoirs may be incorporated into the system  1300 . For example, in some implementations, it may be advantageous to have one control reservoir  1370  per every four grow reservoirs  1304 . Grow reservoirs can also be added vertically by stacking extra levels on top of each row. Additional reservoirs can be used to expand the system vertically and/or horizontally in any number of configurations. 
     The disclosed configurations eliminate aisle space in the system  1300 . Where other systems may require an aisle between each row, in system  1300 , the rows on wheels may be moved closer together and aisle space may be reduced to as low as one aisle in the entire system, where the rows can be moved together to allow a user to walk down one aisle in between any given row for working on all the reservoirs and maximizing the size of the growing space. For example, if a user needs access to the second row  1362 , the user can move the rows on wheels to create an aisle space in between rows  1358  and  1362 . If the user only needs access to row  1358 , the user can move row  1358  close to row  1362  and access row  1358  from the other side. By eliminating aisles, there is more space in a facility, and more space for more rows of reservoirs. 
     In the implementation in  FIG.  1300   , control reservoirs  1370  are connected to grow reservoirs in the four double rolling rows (shown) via irrigation tubing  1332 . The control reservoirs  1370   a  and  1370   b,  connected via pipe  1352   a  may be moved separately from the rolling rows shown. The grow reservoirs are connected to each other via pipe  1352   b.  Other control reservoirs (e.g., control reservoirs  1370   c  and  1370   d ) may be connected to the control reservoirs  1370   a  and  1370   b  and the grow reservoirs  1304  by irrigation tubing. 
     In other implementations, more reservoirs may be added or removed vertically or horizontally to scale up or down to any size and configuration. In implementations where the system  1300  is scaled up with additional reservoirs  1304 , additional control reservoirs  1370  may be needed. For example, in a system which includes eight rows with eight grow reservoirs in each row (a total of 64 grow reservoirs), each row may require two control reservoirs (a total of 16 control reservoirs). The reservoirs  1304  in the rows may connect to one another by pipes, and the control reservoirs  1370  may connect to one another by pipes, and the reservoirs  1304  may connect to the control reservoirs  1370  by irrigation tubing. The use of irrigation tubing in between the control reservoirs  1370  and the reservoirs  1304  allows mobility of each row, which may be on wheels, so that each row can be moved back and forth to create an open aisle in between any of the rows at a any time. 
     In the implementation shown in  FIG.  13   , by way of example, there are multiple water pumps  1322   a - c  in the control reservoir  1370   a.  There may be more than one shared water pump to maintain the water level height in the reservoirs throughout the system. A water pump  1322   a  pumps water to the control reservoir  1370   c.  A second water pump  1322   b  in control reservoir  1370   a  pumps water to the control reservoir  1370   d.  A third water pump  1322   c  in the control reservoir  1370   a  pumps water through the water chiller  1334  to control reservoir  1370   b  which is connected to  1370   a  via pipe  1352   a.    
     The control reservoir  1370   c  has a water pump  1332   d  that pumps water to grow reservoirs  1304   a  located above control reservoir  1370   c.  Other control reservoirs  1370  (e.g., control reservoir  1370   d ) are located underneath grow reservoirs  1304  (e.g., grow reservoir  1304   c ) in the rolling rows of reservoirs are shown with additional water pumps. The water pump  1332   d  in the control reservoir  1370   c  is connected to the grow reservoir  1304   a  by irrigation tubing  1332   b  so that water can be pumped through the row of grow reservoirs in row  1358  and back to the control reservoir  1370   c  via irrigation tubing  1332   c.    
     As shown, the grow reservoirs  1304  in each of the rows (e.g., row  1358 ) are connected to each other by pipes (e.g., pipe  1352   b ) to provide for water flow through the reservoirs in that row. The pipes  1352   b  are contemplated to be 4″ pipes, which however, other sizes are contemplated. 
     The water pump  1322   d  pumps and pulls water to circulate the water in a loop for row  1358  of grow reservoirs  1304  in a closed configuration between the reservoirs at a constant rate. 
     Water then moves through the pipes (e.g., pipe  1352 ) and reservoirs  1304  of row  1358  (not all of which is shown), and back through irrigation tubing  1332   c  to return to the control reservoir  1370   c  (as described in  FIG.  12   ). 
     The irrigation tubing  1332   d  connects the bottom of the control reservoirs  1370   a,    1370   c,  and  1370   d  and is part of a drain out system where the system  1300  can be drained out from multiple control reservoirs. 
     Also, in the system  1300 , grow reservoirs (e.g.,  1304   a ) may have an overflow exit  1392  that starts with a filter or screen at the top of the water level, and fittings connect the overflow tubing as the excess water drains back from all of the grow reservoirs into the control reservoir  1370   c  via irrigation tubing  1332   e.    
     In the implementation shown in  FIG.  13   , the drain out system of the hydroponics system  1300  may also be performed row by row (as shown and described in  FIG.  4   ) as the drain out of each row of grow reservoirs does not need to be performed at the same time. In cases where a rolling row system has a large number of reservoirs  1304  in each row, it may not be feasible to perform a drain out of every row at the same time or day. Therefore, this implementation may include multiple drain out system capabilities per row. In  FIG.  13   , there is one drain out system per each row (e.g., water can be drained out from a side or a bottom wall (e.g., side wall  1310  of a reservoir  1304  through an apertures  1316 , by example, in row  1358 ) through irrigation tubing  1332   f.  The drain out system may include a shut off valve and an adapter to facilitate water drainage from the irrigation tubing  1332   f.  Each row of grow reservoirs, each row of control reservoirs, and even individual reservoirs may include their own drain out systems. Other configurations for a drain out system are contemplated. 
     In the implementation shown in  FIG.  13   , the temperature of the water in the control reservoirs  1370   a  may be lowered in a water chiller  1334 . The water moves from the control reservoirs  1370   a  via an irrigation tubing  1332   g  to the water chiller  1334 . After the water chiller  1334  lowers the temperature of the water, the water chiller  1334  can move the water back through irrigation tubing  1332   h  to the control reservoir  1370   b.  The water can then move from control reservoir  1370   b  to through a pipe  1352   a  to control reservoir  1370   a  and to other rows of grow reservoirs by water pumps located in control reservoirs  1370   a  and  1370   b.    
     The system  1300  in  FIG.  13    may include a shared float valve (not shown). The system  1300  in  FIG.  13    may also include air pumps (e.g., air pump  1320 ) located on the inside or outside of the reservoirs  1304 . The air pump  1320  is a shared component in the system and pumps air via aeration tubing  1328  into the reservoirs  1304  which pumps oxygen into the water that moves through the system  1300 . As shown here, there is an air pump  1320  located in each rolling row, and other aeration configurations are contemplated such as having one shared air pump for every single grow reservoir (or grow and control reservoir) in the system  1300 . 
     The hydroponics system  1300  is scalable, and more grow reservoirs and/or control reservoirs may be added vertically and/or horizontally. 
     Referring to  FIG.  14   , a combination of vertical and horizontal layouts of control and grow reservoirs are implemented in a hydroponics system  1400  according to the present disclosure. The grow reservoirs  1404  and control reservoirs  1470  are shown in a sectional view to show that components may be located inside the reservoir. A portion of this sectional view is enlarged for magnification purposes, and only a portion of each row is shown. The system  1400  illustrates that control reservoirs may be added below a rolling row of reservoirs. For purposes of simplifying the illustration, not all duplicative components are marked. 
     In  FIG.  14   , a row  1458  of four grow reservoirs  1404  are located over a row  1460  of control reservoirs  1470 . As shown, the grow reservoirs  1404  of row  1458  are connected to each other by pipes  1452   a,  and the control reservoirs  1470  of row  1460  are connected to each other by one pipe  1452   b.  The grow reservoirs  1404  and the control reservoirs  1470  are connected to each other by irrigation tubing  1432   a  and  1432   b.    
     In  FIG.  14   , control reservoirs  1470   a  and  1470   b  are located in row  1460 . The control reservoirs  1470  can house several shared components such as one or more float valves (not shown) for the entire system. As shown here, control reservoir  1470   a  houses a water pump  1422   a.  An additional control reservoir  1470   b  is located adjacent to the control reservoir  1470   a  and houses a water pump  1422   b.  Larger control reservoirs or a larger amount of control reservoirs are needed for larger grow reservoirs or a larger amount of grow reservoirs (as the volume of water in the grow reservoirs increase, the volume of water in the control reservoirs must also be increased which can be done by linking more reservoirs together or using bigger reservoirs). A shared water chiller  1434  is optional and as shown in  FIG.  14   , is located outside the control and grow reservoirs to lower the temperature of the water in all the reservoirs  1404  and control reservoirs  1470 . In some implementations, the hydroponics system may not include a water chiller  1432  or it may include multiple water chillers. 
     The number of control reservoirs may vary. In other implementations, one control reservoir may be suitable for up to four reservoirs and additional control reservoirs may be used if there are more than four reservoirs in a system. However, depending on the configuration of the system components, more or less control reservoirs may be used. As shown, the shared water pump  1422   a  is a shared water pump for all the grow reservoirs  1404  in row  1458 . The shared water pump  1422   a  pumps and pulls water to circulate the water in a loop in a closed configuration between the reservoirs  1404  in row  1458  at a constant rate. 
     In the implementation, the water pump  1422   a  pumps water through irrigation tubing  1432   a  from the control reservoir  1470   a  to the reservoir  1404   a  in row  1458 . Water then moves through the pipes  1452   a  and reservoirs  1404  of row  1458 , and through irrigation tubing  1232   b  to the control reservoir  1470   b.  The water pumped into the first reservoir  1404   a  from the water pump  1422   a  is substantially the same amount of water pulled out of the last grow reservoir  1404  (not shown) in row  1458  and through irrigation tubing  1432   b.  All the water in row  1458  that is traveling through the pipes  1452   a  and reservoirs  1404  in row  1458  can travel the same distance as the water in the other rows of the system  1400 . 
     Each row of the grow reservoirs  1404  has a total overflow irrigation tubing  1490  (shown adjacent to reservoir  1404   a ) with a shut off valve (not shown), and when opened, the reservoir can drain completely into a reservoir (e.g., control reservoir  1470   b ) below it. When additional levels of grow reservoirs are stacked on top of each row vertically, each level (or grow reservoir) can have its own drain out system. In larger facilities, instead of draining the system all at one time or in one day, it may be more feasible to drain parts of the system at different times such as level by level or row by row. The complete drain out valve on the bottom can empty all of the water out of the row of reservoirs (e.g., row  1458 ) completely via irrigation tubing (e.g., irrigation tubing  1432   c ). 
     The system  1400  also has irrigation tubing  1432   d  connecting the bottom of the control reservoirs and is part of a drain out system where the system  1400  can be drained out from multiple rows of reservoirs. Tubing  1432   d  is also one of two lines of tubing used to maintain the water levels between the control reservoirs of each row. A small pump (i.e.  1422   b ) located in each row (i.e.  1460 ) of control reservoirs (i.e.  1470   a  and  1470   b ) circulates water in a loop throughout each row of control reservoirs. There can be more or less water pumps (i.e.  1422   b ) circulating the water throughout each row of control reservoirs depending on preferred features, etc. All of the water in the system  1400  is continuously mixing throughout the system. 
     In some implementations, there may also be overflow exits on all levels of grow reservoirs in each row that starts with a filter or screen at the top of the water level, and fittings connect the overflow tubing as the excess water drains back from all of the growing reservoirs into the control reservoir on the lowest level via irrigation tubing. 
     In the implementation shown in  FIG.  14   , the drain out system of the hydroponics system  1400  may also be performed row by row (as shown and described in  FIG.  4   ) as the drain out of each row does not need to be performed at the same time. In cases where a rolling row system has a large number of reservoirs  1404  in each row, it may not be feasible to perform a drain out of every row at the same time or day. Therefore, this implementation may include multiple drain out system capabilities per row. In  FIG.  14   , there is one drain out system per each row (e.g., water can be drained out from a side or a bottom wall (e.g., side wall  1410  of a control reservoir  1470   b  through aperture  1416 , by example, in row  1460 ) through irrigation tubing  1432   e.  The drain out system may include a shut off valve and an adapter to facilitate water drainage from the irrigation tubing. Other configurations for a drain out system are contemplated. 
     In the implementation shown in  FIG.  14   , the temperature of the water in the control and grow reservoirs may be lowered in a water chiller  1434 . In  FIG.  14   , the water moves from a water pump  1422   b  in the control reservoirs  1470   a  via an irrigation tubing  1432   f  to the water chiller  1434 . After the water chiller  1454  lowers the temperature of the water, the water chiller  1434  can move the water through irrigation tubing  1432   g  to the reservoirs in the system  1400 . 
     The system  1400  in  FIG.  14    also includes air pumps (e.g., an air pump  1420 ) located on the outside of the control and grow reservoirs. Each air pump  1420  is a shared component in the system and pumps air via aeration tubing  1428  into the reservoirs which pumps oxygen into the water that moves through the system  1400 . 
     The hydroponics system  1400  is scalable, and more rows of reservoirs may be added either vertically or horizontally. 
       FIG.  15    is an illustration of an example hydroponics system  1500  according to the present disclosure. As plants take up nutrients, the water levels in a grow reservoir  1504  will decrease and may need to be replenished. In some implementations, the grow reservoir  1504  may be refilled manually by the grower using a bucket or pump or the reservoir  1504  might have a float valve  1530  that may be attached to a water or nutrient solution source (e.g., tap, nutrient solution injector, mixing tank, reverse osmosis system, etc.) via a feed tubing  1584 . The water or nutrient solution can be fed by gravity through the tubing  1584  to the float valve  1530  as shown in the  FIG.  15   . 
     As shown in  FIG.  15   , a grow reservoir  1504  is connected to a mixing tank reservoir drum  1572  via feed irrigation tubing  1584 . A water pump  1522  can be used to drain the water via the shut off valve and tubing  1532  or to circulate the mixture inside the mixing tank reservoir drum  1572  as the water is pushed through the connect fitting  1544 . An air pump  1520  and air diffuser  1578  can also be used to keep the nutrient solution oxygenated and mixed. A water chiller or water heater (not shown) can also be used to regulate the temperature inside the mixing tank. 
     In the system  1500  shown in  FIG.  15   , the grow reservoir  1504  is similar to the single unit shown and described in  FIG.  3   . In other implementations, other single or multiple unit reservoir systems may be used. The single grow reservoir  1504  has its own water pump  1522 , water chiller  1534 , and float valve  1530 . The float valve  1530  may be located inside the reservoir  1504  to maintain a predetermined water level and control the continuous flow of water. In  FIG.  15   , a water level check valve  1524  is shown located on the flat corner wall  1506   a  via an aperture  1516   a.  Any number of features to increase ease for the grower can be added such as a water heater, etc. 
     An aperture  1516   d  in  FIG.  15    is a “drain out” shown on the side wall  1510 . Irrigation tubing  1532   a  may be connected to the aperture  1516   d  and include a shut off valve  1536  and an adapter  1538  to facilitate water drainage from a side or a bottom wall of the reservoir  1504 . 
     In  FIG.  15   , a water pump  1522  is located inside the reservoir  1504 . In some implementations, the water pump  1522  may be located outside the reservoir (e.g., water pumps in multi-unit systems. The water pump  1522  may be connected to an irrigation tubing to pump water up and out of the grow reservoir  1504 . 
     In some implementations, as shown in  FIG.  15   , the water pump  1522  is connected to a water chiller  1534 . Maintaining a nutrient solution within a target temperature range can be crucial for the health of plants. The water chiller  1534  can help maintain the temperature in a reservoir, specifically cooling the water (e.g., cools the water in a range of approximately 60°-75°) and returns the cooled water to the reservoir  1504  to cool the reservoir. Similarly, in some implementations, a water heater may be connected to the water pump  1532  to heat the water in the system  1500 . In some implementations, a system  1500  may not include a water chiller or a water heater. 
     In  FIG.  15   , an air pump  1520  is located outside the grow reservoir  1504  and is connected to aeration tubing  1528  which connects to the reservoir. The air pump  1520  pumps air into the reservoir  1504  and may be connected to an air diffuser or an air stone (not shown) in the reservoir. The air diffuser or air stone diffuses oxygen by pumping air through a stone or tube to create bubbles which infuse the water with more oxygen. 
     The components described and shown in  FIG.  15    may be used in a single unit hydroponics system or in a multi-unit hydroponics system. Any combination of these components may be included, depending on the desired use and processes of each system. Also, the components may be shared by reservoirs in a multi-unit system. 
       FIG.  16    is a flowchart of example operations in a hydroponics system according to the present disclosure. The hydroponics system may be scalable and have any number of grow reservoirs and control reservoirs, and rows of grow reservoirs and control reservoirs, which may be added vertically and/or horizontally. The hydroponics system may include system configurations, components, and processes that are described in  FIGS.  1 - 15    above. 
     Water may enter from a water source into the reservoir. In some implementations, the water may enter through a shared float valve located in a reservoir which controls the water depth in the reservoir(s). An operation  1602  pumps water from a shared water pump into a first reservoir at a constant rate in a hydroponics system. The shared water pump may be located outside the reservoir(s) or inside a grow or control reservoir. The water pump can pump water via irrigation tubing and directly into a reservoir or into a pipe which transports water to a reservoir. 
     An operation  1604  circulates the water in a closed loop configuration through a plurality of grow reservoirs. Circulating the water may include the water pump pushing and moving the water through a plurality of pipes and/or irrigation tubing. Each pipe connects two reservoirs to each other. 
     In some implementations, an operation  1606  transports air from at least one shared air pump to the water in a plurality of grow reservoirs through aeration tubing. In some implementations, there may be multiple lines of aeration tubing providing air to multiple grow reservoirs. 
     In some implementations, an operation  1608  lowers the temperature of the water in the hydroponics system with a water chiller. In some implementations, water can move through the hydroponics system from a water pump to the water chiller and to a reservoir. In some implementations, water can move through the hydroponics system from a water pump to the water chiller and back to the water pump before moving to a reservoir or a pipe. 
     In some implementations, an operation  1610  drains water from the hydroponics system from a shared drain out system. The water may be drained from a variety of drain out systems, as described above. For example, a drain out system may be located on exterior walls (e.g., bottom wall or side wall) of any one of the plurality of grow reservoirs to drain water from one or more reservoirs, and in some cases, a row of reservoirs. The drain out system may include irrigation tubing connecting any number of grow and/or control reservoirs, from which the water can be drained. 
     In some implementations, an operation  1612  arranges the plurality of grow reservoirs in at least one of a vertical row and a horizontal row. In some implementations, the reservoirs are configured on rolling rows. At least one control reservoir may be added to the grow reservoirs especially for vertical and/or rolling systems. Any number of reservoir layouts can be configured vertically and horizontally. Custom vertical and horizontal layouts of reservoirs can also be configured depending on the size and shape of the growing space. 
     An operation  1614  pulls water into the shared water pump from a second reservoir. The water may be pulled through a second pipe connected to the second reservoir via irrigation tubing. The water can move through the water pump and be pushed to circulate through the hydroponics system. 
     It should be understood that operations may be performed in any order, adding and omitting as desired, unless explicitly claimed otherwise or a specific order is inherently necessitated by the claim language. 
     The above specification, examples, and data provide a complete description of the structure, features and use of exemplary implementations of the invention. Since many implementations of the invention can be made without departing from the spirit and scope of the invention, the invention resides in the claims hereinafter appended. Furthermore, structural features of the different implementations may be combined in yet another implementation without departing from the recited claims.