Purchase this item and get 
Fluval BIOMAX bio rings have a complex pore system where beneficial bacteria can thrive. They have more capacity than most biological media, which ensures optimal contact time for greater efficiency. BIOMAX also reduces and controls ammonia and nitrite.
- Biological filter media
- Supports thriving beneficial bacteria growth
- Reduces and controls ammonia and nitrite
- More efficient than most biological filter media
- Replace every 6 months
- For use in freshwater and saltwater aquariums
