Fluval Bio-Bag for FX4/FX5/FX6 External Filter

Fluval Bio Foam Pads are specially designed for Fluval FX5/6 High Performance Canister Filters.
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.
Key Features
- Enhances biological filtration
- Effectively captures small particles and debris
- For freshwater and marine environments