Fluval FX4/FX5/FX6 Bio Foam Plastic Company X says that I

Company X says that I don’t need to replace their phosphate absorber for several months

and the plant must be pruned before it becomes so compact that no light reaches the lower leaves

A: The directions are designed for use with DI or RO water

Stainless steel power cord protector

The unique size and shape of the bark particles

Fluval FX4/FX5/FX6 Bio Foam Plastic Company X says that IDesigned specifically for the Fluval FX4, FX5 and FX6 performance canister filters, Bio Foam captures large particles and debris for effective mechanical filtration. Mechanical filter media Custom fit to prevent debris bypass Ideal pore size allows efficient water flow and longer media lifespan Enhances the biological filtration process For use in freshwater or saltwater aquariums Convenient 3 pack format 3x foam pads