Specifically designed for the Fluval U2/U3/U4 filters, BIOMAX provides an optimal environment for the colonization and growth of beneficial bacteria.

Features: 

• Biological filter media
  
• Complex pore system provides large surface area for beneficial bacteria
  
• Reduces and controls ammonia and nitrate
  
• Suitable for freshwater, saltwater or reptile environments

Compatibility: 

• U2 Underwater Filter
  
• U3 Underwater Filter
  
• U4 Underwater Filter

Item #: A495