Feature: -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. Product Attributes: Material: Active carbon and ceramic Color: White Quantity: 1 Pcs Weight: about 150g in bag Outer diameter : 1.2cm /0.47 inch Inside diameter : 0.4cm/0.16inch Height : 1.1cm/ 0.43inch Package Include: 1 x BOYU CR-150 Aquarium Bio Ceramic Ring Note: 1.Due to the light and screen difference, the item s color may be slightly different from the pictures. Please understand. Make sure you don t mind before you bid. 2.Please allow 1-5mm differences due to manual measurement.
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