Lees Original Undergravel Filter - 12" Long x 6" Wide (2.5 Gallons)

A trouble free biological filter designed with adjustable 1" dia. uplift tubes for better water circulation and multiple-plate construction for easy installation. Includes airline tubing and discard-A-Stone and features the fish-saver cleaning elbow. Advanced design allows a separate plate installation and also has optional flow-thru set-up for use with a power head. Made of special quality plastic which resists splitting and cracking.