Swan Products ELSP38025 Element ELSP38050, 25 ft, Black Releases a range of .5 to 1 gallon of water per foot while delivering water straight to the roots; Uses 70% less water than standard sprinklers with water restrictor that controls water flow System lies directly under soil or much; Delicate foliage and vegetables stay protected from high pressure water Meets both the lead free standard under the Federal Safe Drinking Water Act and California's strict standards for phthalate content; Measures 25' in length and 3/8" diameter To use hook the hose up to watersource and place hose in straight line, weaving when needed; For optimal result, water source should be at highest point as water will not flow correctly up an incline To acheive ideal water flow adjust water pressure until water drips slowly from hose; Fill fully (takes 1 minute per foot to fill) and turn spit off when full, then back on 1/2 to 3/4 turn for duration of use