Fluval Aquarium Filtration from DrsFosterSmith.com - Lowest price

Fluval foam provides mechanical straining of particulate waste and prevents premature clogging of other filter media in the Module Stack. Although the primary purpose of the foam is mechanical filtration, biological activity will eventually occur within its pore structure.

Fluval foam provides mechanical straining of particulate waste and prevents premature clogging of other filter media in the Module Stack. Although the primary purpose of the foam is mechanical filtration, biological activity will eventually occur within its pore structure.