Tetra 41003 Stay Clean Bio-Bag Large 1 Pack, 1 CT

The whisper Bio bag is an easy to use disposable Filter cartridge that provides additional biological filtration to eliminate harmful ammonia Filter pads trap particulate matter while carbon removes dissolved wastes, odors, and gases. Sizes for whisper Bio bag Filter cartridges Easy to assemble, easy to replace, Water clarifier, Active cleaning, Easier maintenance and Integrated design