Danner Manufacturing, Inc. Suprem Oxy-Flo, Low Volume Air Pumps 3W, Air Pump 3, #40513 Pondmaster Supreme Hydroponic Air Pump 3 Watt Aerates Nutrients to Stimulate Root Growth Energy-Efficient Motor Easy to Use The easy to use supreme hydroponic 2.8-watt air pump is the perfect way to stimulate root growth for your indoor plants by aerating nutrients The energy-efficient motor is quiet with an air volume of 110-cubic inch per minute Maximum water depth is 3-1/2-feet Accepts standard airline tubing 1 Year limited manufacturer warranty