BOYU Ceramic Ring Suitable for fresh water, salt water fish tank. To fully exert biological filtration capacity of law porous filter ring. This product is mix made of the softy active carbon and ceramic. Chemically stable, fully in line with the original micro-organisms living chemical environment. High permeability, which can be aerobic nitrification and anaerobic denitrification, to make the water more stable, is the best biological filter material. Color : White Quantity :1 pack Upgrade your aquarium setup with the BOYU Ceramic Ring – Order now and experience the difference!
