Ultum Nature Systems Delta Canister Filters are the perfect filtration solution for your aquarium. Aquascapers will appreciate the clean white look along with it's superior performance. The UNS Delta Canister filters are made of sturdy materials so you don't have to worry about knocking it over when you're busy creating the next great scape. The add-on accessory Delta Quick Release Double Tap Valves make cleaning and maintaining the filters easy. Simply turn the dial and remove the valves from the canister.