Sunterra 200850 Pond Pump, 850 GPH, Black Pond Pumps Circulate Water in a Pond to prevent Breeding conditions for Unwanted Insects while Oxygenating it for Plants and Fish Pumps 850 Gallons of Water per Hour and has a Maximum Lift of 16.4' Magnetic Pumps are Environmentally Safe, Have no Coolants and use less Energy than Direct Drive Pumps Has a 25 Foot Power Cord Has a 2 Year Limited Warranty and is UL Listed