Lees Original Undergravel Filter- 48" Long x 12" Wide or 36" Long x 15" Wide (55 Gallons)- DS

Lees Undergravel Filter is the key to providing a strong biological filtration system. Undergravel filters utilize your tank's gravel substrate as a filtering surface area while providing oxygen to help aerate your aquarium water.

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 water down through the media and up through the uplift tubes.

The advanced design allows separate plate installation and features an optional flow-thru setup, which can be used with a powerhead.

Note: Must be attached to an air pump or powerhead (sold separately).