- Designed for use with both the Fluval 204/5/6/7 and 304/5/6/7 filters and these foams are custom made to fit these filters to prevent any waste or debris bypassing the filtration
- The material also promotes biological filtration as the surface is ideal for bacteria to colonise, creating a natural process to keep your tank clean, clear and healthy
- The foams porous surface is designed to trap waste and debris without slowing the flow of water through the filter
What you need to know:
- 1 x Fluval Bio-Foam Aquarium Filter Block (2pcs) for 204/5/6/7 & 304/5/6/7
- For use in the external 204/5/6/7 and 304/5/6/7 Filters by Fluval
- Promotes biological filtration
