Boyu Ceramic Size:500 this specialized formula will keep

this specialized formula will keep your fish healthy

Ribbed hosing

amino acids) and micro and trace elements (iron

Chemically stable- fully in line with the original micro-organisms living chemical environment

Boyu Ceramic Size:500 this specialized formula will keepSuitable 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.