OASE 42749 Filtral 1200 Filter UV with Pump, 9W The Filtral is a compact, all-in-one in-pond filter unit with a UV Clarifier and built-in filtration with 4 different types of filter media that provide mechanical and biological cleaning for ponds up to 1200 gallons. The Filtral 1200 is powered by a 250 GPH pump and includes a 9W EPA-registered UV Clarifier, two filter foams, as well as bio-media elements and filter pebbles to ensure extra cleaning power. Without a nozzle, the Filtral can run a small waterfall or stream via the diverter valve. Three interchangeable nozzles included to create attractive water displays. Telescoping nozzle tube included for adaptation to the specific water depth.