Lees Aquarium Original Undergravel Filter The Lees Aquarium Original Undergravel Filter is a trouble-free biological filter that is designed with adjustable 1" diameter uplift tubes for better water circulation and multiple-plate construction for easy installation. The advanced design of the filter allows a separate plate installation and also a optional flow-thru set-up for use with a power head. Features: Made of special quality plastic which resists splitting and cracking Includes airline tubing, discard-A-Stone, and fish-saver elbow Safe for your pets Item Specifications: Dimensions: 16"L x 8"W 20"L x 10"W 24"L x 12"W 30"L x 12"W 36"L x 12"W 48"L x 12"W
