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Fluval BioMax Replacement Media for U2, U3, and U4 Series Underwater Filters provides an optimal environment for biological filtration. Each ring has a complex pore system that allows beneficial bacteria to thrive, helping to reduce and control ammonia and nitrate.

  • Provides optimum biological balance
  • Complex pore system supports colonization and growth of beneficial bacteria
  • Reduces and controls ammonia and nitrate
  • Replacement bio-media for Fluval U2, U3 and U4 Underwater Filters

Directions: Rinse before using. Safe for freshwater, marine, or reptile habitats.

Fluval Stage 3 Biomax Replacement


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