The Penguin 75 Bio-Wheel Power Filter delivers effective and easy, 3-stage aquarium filtration without the hassle of air pumps, valves, or tubing. Convenient Rite-Size "A" filter cartridge come ready to use with each filter to mechanically and chemically remove waste, discoloration, and odors. Biological filtration is provided by the revolutionary Bio-Wheel which has been proven best at removing toxic ammonia and nitrites.
