Description Fluval – Underwater Filter BIOMAX 110g Fluval® BIOMAX provides an optimal environment for the colonization and growth of beneficial bacteria. The unique bio rings have a complex pore system that provides an optimal environment where beneficial bacteria can thrive. Fluval® BIOMAX also reduces and controls ammonia and nitrate. For freshwater and marine environments. For Fluval® U Series Underwater Filter models U2, U3, U4
