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Trouble-free Biological Under Gravel Filter designed with adjustable 1" uplift tubes for better water circulation. Multiple plate construction for easy installation. Lee's Undergravel Filter is the key to providing a strong biological filtration system. Placed on the bottom surface of the aquarium, the filter plates utilize the gravel bed as a source of surface area and provide oxygen by recirculating the water down through the media and up through the uplift tubes.
Advanced design allows separate plate installation and features optional flow-thru set-up which can be used with a power head. Made of special quality plastic which resists splitting and cracking