Marineland filtration products are the premium choice for your aquarium filtering needs. These three-stage filters suit your needs for mechanical, chemical and biological filtration. Find the right filter size you need today!
BIO-Balls do not require replacement unless damaged or destroyed. In the event of
excessive buildup, you may gently rinse with water from an established aquarium, if
desired. Do not clean with soaps or abrasives and never rinse with tap water.
bio balls by lukystif from rochester, ny.08/30/2012
I like them, I was looking fo k-1, but these little balls float, have tons of surface area, and if you have the filter area , and air injected , they will bounce around , float , grow benefitial bacteria probrobly better then anything on the market.
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.