Fluval Biomax for External Filters:  The Biomax rings have a complex pore system where beneficial bacteria can thrive. They allow ideal water movement throughout the media, to ensure optimal contact time for efficient biological filtration.

For freshwater and marine environments.

Features:

• Biological filter media
• Greater capacity than most biological filter media
• Also helps reduce and control ammonia and nitrate

500g

Designed for filter models:

106, 206, 306, 406, FX5, 105, 205, 305, 405, 104, 204, 304, 404.