Genuine Fluval Foam Insert for External Fluval Filters. Suitable for Freshwater and Marine Use. Th...Genuine Fluval Foam Insert for External Fluval Filters. Suitable for Freshwater and Marine Use. The foam insert acts as a strainer, capturing particles and debris and preventing them from clogging biological and fine mechanical media. It performs essential mechanical filtration, the crucial first stage of the filtration process. Fluval recommends replacing the foam insert every 6 months. Features: Captures large particles, Custom fit to prevent bypass, Enhances biological filtration. For use with FX4, FX5, FX6 Canister Filters. Promotes beneficial bacteria growth. Recommended to be replaced every 6 months.
Genuine Fluval Foam Insert for External Fluval Filters. Suitable for Freshwater and Marine Use. The foam insert acts as a strainer, capturing particles and debris and preventing them from clogging biological and fine mechanical media. It performs essential mechanical filtration, the crucial first stage of the filtration process. Fluval recommends replacing the foam insert every 6 months. Features: Captures large particles, Custom fit to prevent bypass, Enhances biological filtration. For use with FX4, FX5, FX6 Canister Filters. Promotes beneficial bacteria growth. Recommended to be replaced every 6 months.