This CNZ HW-304B 525 GPH 4 1 filtration system is ideal for fresh and saltwater aquariums. The integrated 9 watt sterilizer helps keep your aquarium healthy and crystal clear. The HW-304B defies. It comes equipped not only sterilizer but all the necessary plumbing for installation and includes four 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 HW-304B includes four fine filter pads white and a single coarse filter sponge blue for enhanced mechanical filtration. With the addition of premium activated carbon, ceramic rings or bio-balls, you’ll achieve superior filtration aquarium water. The HW-304B canister filter has a convenient prime pump that eliminates the need for manual siphoning. Outside canister filters tanks up to 150 gallons with mechanical, biological and chemical filter agents. Maintains healthy oxygen levels in your tank by aerating with a built in spray bar. Built in 9w sterilizer, recommend replacing light bulb every 6-12 months. Hose and various sized connectors are included for a convenient and easy setup, media kits included. Dimension: 12 in L X 12 in W X 18 in H, 110-120v. Max Flow: 525GPH US plug.