The Eheim Professionel II Aquarium Canister Filter Model 2028 is a complete external filtration system for freshwater or saltwater fish-only aquariums up to 158.5 gallons.Features:Includes pump, hoses, tank connection plumbing and all necessary mediaPump output approx. 277 gph20W power consumption18" x 8.25" x 8.25"Canister Volume Approx. 3 gallonsOne-action priming aidAuto-valve release (AVR)Maintenance indicator (MI)Media Basket Adjustable flow rateSelf primer