Pondmaster Deep Water air pumps are perfect for a variety of water related applications for your pond and aquarium. Helps aerate your water and maintain a healthy living environment to ensure your aquatic life receives the proper oxygenation needed.Energy Efficient Air Pump MotorEasy to use and Quiet Operation1 Outlet Discharge with High Volume Air FlowAir Diffuser Included1 Year WarrantySuitable for use in freezing temperatures as long as the air pump itself is not exposed to freezing temperatures - locate in the garage above freezing. NOTE: Tubing is sold seperately!ModelPonds Up to:Max DepthPowerHose SizeAP-202500 Gallons7 Feet20 watts1/2" IDAP-405000 Gallons7 Feet40 watts5/8" IDAP-607000 Gallons9.6 Feet50 watts3/4" IDAP-100 10,000 Gallons11.5 Feet100 watt3/4" ID