Boyu CR-300 Ceramic Ring Aquarium Filter Media

Boyu BIO CERAMIC SYSTEM is mix made of the soft active carbon and ceramic, for biological filtration. Helps in aerobic nitrification or anaerobic denitrification to make the water more stable and is one of the best biological filter materials around. The ceramic rings acts as an achor for beneficial bacteria which ensure that the aquarium is filtered of ammonia and nitrates