<b>Features: </b><br> Recommended Tank Size: 10gal<br> Reliable source of air fulfill basic air requirements ensuring enough dissolved oxygen is available for fish.<br> Perfect to run a small sponge filter, bubbler decoration, air disc or other air-driven ornaments in small/nano tank.<br> Rubber stabilizer feet offer smooth, quiet operation. <br> The blue check valves will protect you air pump by preventing aquarium water from back siphoning during a power outage when you place your air pump below the aquarium water level.<br> <b>Specifications: </b><br> Dimension: 3.75x2.5x1.75 inches (L x W x H) <br> Length of power cord: 2.5 ft<br> Voltage: 110V-120V/60Hz<br> <b>Includes: </b><br> 1x Air Pump<br> 1x 4ft Tubing<br> 1x Check Valve<br> 1x 1” Air Stone<br> <b>Directions for Use: </b><br> 1. Cut the tubing to the length needed. 2. Attach the airline into the pump; connect the air stone to the other end of airline. 3. Place the pump above the aquarium or bucket if possible. Or you need to add a check value (the blue valve) between air pump and air stone to prevent back siphoning. 4. Plug the pump in. Remember to make a "drip loop" for the power cord.