Fluval BIOMAX bio rings feature an intricate pore structure that provides a perfect habitat for beneficial bacteria to flourish. These bio rings offer superior capacity compared to many other biological filter media, facilitating excellent water flow through the material for effective biological filtration. They play a key role in managing and decreasing levels of ammonia and nitrate. Suitable for both freshwater and marine setups.

Compatible with filter models: 106, 206, 306, 406, FX5, 105, 205, 305, 405, 104, 204, 304, 404.