Fluval BioMax bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive.
The BioMax bio rings have more capacity than most biological filter media and allow ideal water movement throughout the media, to ensure optimal contact time for efficient biological filtration. It also reduces and controls ammonia and nitrate. For freshwater and marine environments.
For filter models: 106, 206, 306, 406, 105, 205, 305, 405, FX5, FX6, 104, 204, 304, 404, 103, 203, 303, and 403
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