This filter media renewal kit is made for use with Fluval Edge filters. Biomax are designed to encourage growth of beneficial bacteria, whilst the foam removes debris and dirt in the aquarium. The Fluval Foam & BioMax renewal kit is specifically designed for the Fluval EDGE power filter. The foam pad collects particles and debris, while... Flex 15g exclusive Simple replacement process Slick, Black color The plastic "C" clip does not come with the replacement foam