The CF400-UV has become a very popular canister filter for the price and performance. The 370GPH, 3+1 filtration system is ideal for fresh and saltwater aquariums ranging in size from 75 gallons to 125 gallons. The integrated 9 watt UV sterilizer helps keep your aquarium healthy and crystal clear. The CF400-UV defies its low price because it comes equipped not only with a UV sterilizer but all the necessary plumbing for installation and includes three large filtration media compartments, allowing you to add the filtration media of your choice. The filtration media trays offer a fully customizable filtration system to suit your specific aquatic needs. The CF400-UV includes three fine filter pads (white) and a single coarse filter sponge (blue) for enhanced mechanical filtration. With the included AquaTop Premium Activated Carbon, Ceramic Rings, and Bio-Balls you'll achieve superior filtration and crystal clear aquarium water. The CF400-UV Canister Filter has a convenient Prime Pump that eliminates the need for manual siphoning! Say goodbye to a mouth full of aquarium water!!!