Penguin? BIO-Wheel Power Filters deliver easy, three-stage mechanical, chemical and biological aquarium filtration. Convenient Penguin Rite-Size Filter Cartridges come ready to use with each filter?ready to mechanically and chemically remove waste, discoloration and odors. Each contains new faster-acting Black Diamond Premium Activated Carbon for maximum efficiency.
Biological filtration is provided by the revolutionary and patented BIO-Wheel - proven best at removing toxic ammonia and nitrite. All BIO-Wheel filters feature Noise-Reducing Two-Piece Vented Covers, and Adjustable MId-Level Intake Strainers.
Certified flow rate of 100GPH, perfect for all aquariums up to 20 gallons. Uses the Rite-Size "A" filter cartridge.