Fluval Edge Foam & BIOMAX Renewal Kit. Fluval Foam & BioMax Renewal Kit is specifically designed for Fluval EDGE Power Filter. The foam pad collects particles and debris, while BioMax encourages optimal colonization of beneficial bacteria, which enhances the reduction of fish waste, resulting in a healthier aquarium environment. Key Features : Specifically designed Fluval EDGE Power Filter Foam pad collects particles and debris BioMax encourages optimal colonization of beneficial bacteria Enhances the reduction of fish waste Creates a healthier aquarium environment.