Designed for aquariums up to 45 US Gal / 200 L Square-shaped canister design holds 35-50% more water than round canisters of similar size Improved motor performance – reduces maintenance frequency, increases flow rates and head pressure Sound-dampening impeller offers 8-15% quieter operation than previous generation Patented Aqua-Stop valves for easy hose disconnections Redesigned impeller cover for added durability Re-engineered priming system for easier start-up Filter media included – mechanical, chemical and biological Complex cleansing path maximizes water contact time with filtration media Multiple removable media baskets Strong, single-motion lift-lock clamps offer a more secure closure and easier filter access Hose lock nuts for added security Made in Italy For use in freshwater and saltwater aquariums