Boyu Ceramic Rings

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.

Select Grams	300g, 500g

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