Supreme (Danner) ASP01033 Skilter 400 Power Filter for Aquarium Ideal as a primary Filter for aquariums up from 30 to 100 gallons Can be used as a supplemental Filter on larger aquariums The protein skimmer is effective for aquariums up to 125 gallons The larger powerful motor is Rated for a flow of up to 400 gallons per hour Comes with two dual-media bio-matrix cartridges