Designed specifically for Fluval FX4, FX5 and FX6 canister filters, Bio-Foam performs double duty as both an effective mechanical and biological media.
- Mechanical/Biological filter media
- Dense structure ideal for trapping small particles
- Intricate, porous network provides vast surface area to facilitate growth of beneficial bacteria
- Helps create clean and healthy water conditions
- For use in freshwater and saltwater aquariums
- Convenient 2-pack format