The Oase Filtral is a compact, all-in-one in-pond filter unit with a UV Clarifier and built-in filtration with 4 types of filter media that provide mechanical and biological cleaning for ponds up to 1,600 gallons. The Filtral 1600 is powered by a 410 GPH pump and includes a 13W EPA-registered UV Clarifier, two filter foams, bio-media elements and filter pebbles to ensure extra cleaning power. Three interchangeable fountain nozzles are also included to create attractive water displays. Without a nozzle, the Filtral can run a small waterfall or stream via the diverter valve. 14"W x 11"L x 6"H