The Ocean Clear Model 318 Canister Filter with Polystrand 50 Micron Bio-Filter is for biological filtration.Features:Contains 205 sq.ft., 50 micron polystrand filter pads and full-flow grid providing the highest available wetted surface area for nitrifying bacteriaFilter body: 13" wide X 11" tall. Needs 12" clearance above the canister filter for cartridge removal.3/4" FNPT inlet/outletIncludes 3/4" and 1" hose adapters, teflon tape for fittings and drain valveFor use with pumps up to 1200 gphDoes not include pump, hose or a method for connecting the filter to your tank. We highly recommend using the Inland Sea Suctions and Returns with the Ocean Clear Filters, and we carry several models of aquarium and pond pumps.Product Manual (pdf format in new window)