Tuffclassified

Biological, chemical and mechanical filter media BIOMAX- complex pore system provides larger surface area for beneficial bacteria growth (rinse monthly with aquarium water and replace every 3 months) Activated Carbon improves water clarity and eliminates odors, discoloration and impurities (replace monthly) Mechanical foam effectively removes particles and debris (replace every 2 months) Fluval recommends never replacing all media simultaneously to ensure constant presence of beneficial bacteria For use in freshwater and saltwater aquariums