Aquaclear 70-Gallon Foam Inserts 18-pack (6 packs of 3)

AquaClear 70 Foam Filter Insert is a mechanical filter media that effectively removes particles and debris from aquarium water. The aquarium filter sponge also prevents particulate waste from prematurely clogging other media in the filter. Primarily a mechanical filtration media, it also acts as a bio sponge filter media, providing powerful biological filtration as friendly bacteria eventually grow inside its pore structure. Exclusively designed for the AquaClear 70 Power Filter, the Foam Filter is safe for fresh and saltwater aquariums.