Lees Original Undergravel Filter [Aquarium, Filters Undergravel] 48" Long x 12" Wide (40-55 Gallons)

Note: Must be attached to an air pump or powerhead (sold separately).. The filter is made of special, premium premium plastic which resists splitting and cracking. Adjustable 1" uplift tubes provide superior moisture circulation. The advanced design allows separate plate installation and features optional flow-thru setup, which can be used with a powerhead. * Provides biological filtration and aeration to aquarium * Includes airline diffusers, carbon cartridges, Discard-A-Stone and fish-saver feature * For use in fresh and saltwater aquariums Placed on the bottom surface of the aquarium, the filter plates utilize the gravel bed as a source of surface area for bio-filtration and provide oxygen by recirculating the aqua down through the media and up through the uplift tubes. Undergravel filters utilize your tanks gravel substrate as a filtering surface area while providing oxygen to help aerate your aquarium moisture. Lees Undergravel Filter is the key to providing a strong biological filtration system