The Fluval External Canister Filters provides complete, multi-stage filtration. The modular design allows for quick and easy maintenance while flexible filter media chambers permit maximum versatility for basic to custom filter media configurations. Fluval 05 external canister filters offer quick, trouble-free maintenance features. These include instant priming, lift-lock clamps that securely lock the cover in place and an Aqua-Stop feature that stops the water flow without the need to disconnect hoses. Backed by a 3-year