FOAM FX4 FX5 FX6 3 PK

Designed specifically for the Fluval FX4, FX5 and FX6 performance canister filters, Bio-Foam captures large particles and debris for effective mechanical filtration. Key Features : • Mechanical filter media • Effectively traps majority of waste and debris • Complex foam structure maintains consistent water flow and naturally promotes beneficial bacteria growth • Custom fit to prevent debris bypass • Enhances the biological filtration process • Convenient 3-pack format • Replace every 6 months • For use in freshwater and saltwater aquariums