The enhanced design of the Fluval 306 Canister Filter; has improved performance; reliability; and noise reduction over earlier generation Fluval filters. The square design; and complex water flow pathways; utilizes the entire canister space for increased media-to-water contact. Increased motor power; strenthened priming and lift lock handles; and improved sound dampening make the Fluval 306 a unique step-above other canister filters. Multi-stage filtration houses chemical and biological media in separate modules; so biological media stays untouched when you perform maintenance on your filter. The revolutionary AquaStop System makes cleaning and maintenance leak proof and mess free by stopping water without disconnecting hoses. Sound dampening impeller design; with ceramic bushings; prevents noisy distractions from your aquarium; making the Fluval 306 the perfect choice for any location. Hose lock nuts and a heavy duty impeller cover ensure secure connection and prevent breakage. Lift-lock clamps seal the lid remarkably tight but release easily to open the filter. Manual siphoning is a thing of the past with Instant Prime technology. Filter also features intake strainer; pre-assembled parts; and pre-packed media for a complete installation package. The Fluval 306 canister filter is rated for aquariums up to 70 gallons; and has a maximum flow rate of 303 gph. See the manufacturer's User Manual for complete product information.