- Enhances biological filtration
- Effectively captures small particles and debris
- For Freshwater and marine environments
- Increased surface area helps the growth of beneficial nitrifying bacteria
- Traps small particles that are not retained by the first stage of foam filtration
2 bio-foam pads made for the Fluval FX2, FX4, FX5 and FX6 filtration systems. These bio foam pads provide outstanding mechanical and biological filtration thanks to an intricate pore structure that offers a large surface area for the growth of helpful nitrifying bacteria. In addition, they trap small particles that are not retained by the first stage of foam filtration.