All 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.
1 problem it's for a 10 gallon aquarium, you need double GPR I would go with.
poor design by laz from Pocatello, Idaho06/05/2010
i bought my bio wheel, and it worked good for about a month and then the wheel quit spinning. Put a new filter in, and it started to work again. after a week, it was back to not spinning. pulled whole unit out of tank, and completely cleaned out the whole thing. Worked good for about a week again. Then did it again with same results. Now it stops for long periods of time, and water is blocked and pours out over the top of the filter. i bought this filter based on recommendation from pet shop saying it was the best. My friend went to the same pet shop a week later and talked to a different guy who said that bio wheels are the worst filter out there because they always have to warranty parts on them. I am taking this worthless thing back today. I have researched this well, and have found this to be a highly common problem with these. Don't buy one. You are better off getting an Aqua Tech from Walmart that takes the same filter cartridges anyways, but if you buy them from Walmart they are half the price.