PF300 40W 660GPH AC Pond Filter Fountain with Light1200GPH Pump Feeds 4 Stage Filter: This pond pumps for outdoor ponds features a 42W pump delivering 1200 GPH flow for ponds up to 2000 gallons. It feeds water through the 4 stage filter box and U V clarifier for complete cleaning. Energy efficient and whisper quiet with thermal overload protectionauto shut off if pump runs dry and safe for fish. 12W U V Clarifier for Crystal Clear Water: Say goodbye to green water! This pond pump filter has a 12W U V