Boyu Cr-150 Aquarium Bio Ceramic System Ring For Fish Tank 150g

Description: BOYU CR-150 Aquarium Bio Ceramic System Ring For Fish Tank Suitable for fresh water and salt water fish tank. To fully exert biological filtration capacity of law porous filter ring. 400 pores, so that maximize the contact area between water and filter. Chemically stable, meet the original micro-organisms living environment. Good for denitrification, water purification and removing impurity. Specification: Material: Active carbon and ceramic Color: White Weight: about 150g in bag Outer diameter : 1.2cm/0.47inch Inside diameter : 0.4cm/0.16inch Height : 1.1cm/0.43inch Package Includes: 1 x BOYU CR-150 Aquarium Bio Ceramic Ring