Fluval A237 Bio-Foam is densely structured to trap small particles that escaped in first stage of foam filtration. It has exceptional mechanical and biological filtration capabilities.

Its intricate network of pores provides a large surface area that encourages the growth of helpful nitrifying bacteria, which is crucial for efficient biological filtration and goes a long way in creating clear and healthy water for fish and plants to thrive.

Features

Exclusively designed for Fluval aquarium canister filters

Performs exceptional mechanical and biological filtration

Dense structure is very effective at trapping small particles that are not captured in the first stage of foam filtration

Intricate network of pores provides a large surface area that encourages the growth of helpful nitrifying bacteria

Crucial for efficient biological filtration

Helps create clear and healthy water for fish and plants to thrive

For freshwater and marine environments

For Fluval filter models: 304, 305, 306, 404, 405, 406