Review on CerMedia MarinePure Biofilter Media Gems - 90g, Tan (905002) by Gina Clark

I am familiar with Cermedia products and use them in all my aquariums and carp ponds. Great product, works well, sometimes breaks. I ordered these because I figured my filter had gaps with balls to fill in. I knew they were smaller, but not that small and not that small. It's literally a handful and at this price point I'd pass it up as it won't go far. I could just take a block and cut out a circle to fit the filter and it would be better.