Fluval Aquarium Foam Filter Block - 2 Pack

Fluval Aquarium Filter Foam Blocks provide mechanical straining of particulate waste. It prevents particulate waste from prematurely clogging other filter media in the module stack. Although the primary purpose of Fluval Foam is mechanical filtration biological activity will eventually occur within its pore structure.

Hag Fluval Foam 2Pc Block 404/ 405