Best Choice Products External Fish Tank Pump Canister and Filtration System for Aquarium w/ 5 Stage Filter-Green Not only does it fit ALL aquarium tanks; our external canister works great for marine reef aquariums such as saltwater coral, reef, and fish tanks Purchase our canister for your aquariums to increase oxygen and wave movements for the most natural ecological environment and a cleaner tank Watch your fish and coral live more healthy and actively; bring the ocean into your aquarium Canister runs quietly and is extremely reliable; 5 stage Multi-Layers Filtration; Quick release taps for easy cleaning Overall Dimensions: 11"(L) x 11"(W) x 18.5"(H)