Fluval Bio-Foam 2 Pack for FX4 FX5 and FX6 Canister Filters
- Performs double duty as both mechanical and biological filter media
- Dense structure ideal for trapping small particles
- Intricate, porous network provides vast surface area to facilitate biological activity
- Helps create clean and healthy water conditions
- Includes two Bio-Foam inserts designed for use in Fluval FX4, FX5 and FX6 Canister Filters in freshwater and saltwater aquariums
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