Fluval U Underwater Filter BioMax

Fluval U Underwater Filter BioMax

• Replenish only half at one time
• Fits the Fluvial U2, U3 and U4 Filters
• Promotes growth of beneficial bacteria
• Works in freshwater or marine environments

Fluval BioMax provides an optimal environment for beneficial bacteria growth. The bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive. It also reduces and controls ammonia and nitrate. Fluval BioMax is for freshwater and marine environments, and fits the U series filter models: U2,U3 and U4.