Fluval Blue BioFoam 207-307 MAX, 2pcs
- Premium Biological and Mechanical filtration
- Rippled surface pattern offers 30% more area to efficiently trap waste and debris
- Prevents premature clogging extending life of subsequent filter media
- Complex foam construction helps maintain even and consistent water flow
- Ideal surface for growth of beneficial, nitrifying bacteria
- Custom fit with no gaps to maximize filtration efficiency
- Convenient 2-pack format
- Replace every 6 months
- For use in freshwater and saltwater aquariums
