Marineland Perfect-A-Flo Undergravel Filters

With the addition of a Perfect-A-Flo Undergravel Filter, you can turn your gravel bed into an effective and easy-to-maintain biological filter. Great for both freshwater and saltwater applications, the Perfect-A-Flo filter is manufactured with a unique design that permits uniform flow across the entire aquarium. Filter features a fish protector on the flow spouts and a raised tube connector to keep gravel from falling beneath the plate. Operated with air pump or powerhead (sold separately). Super easy to install!