Quartz ceramic ring is able to give full play to the biological and chemical filtration capacity of porous glass filter ring. It is suitable for fresh water, sea water fish tank. Microfiltration quartz ring is made of natural silicate materials, sintered at high temperature under 1200 degrees. The nature of the chemical is steady, in full compliance with the original bio-chemical environment for life, the more unique pore structure of the unit surface, its area is 6-9 Times than generally biochemical central. With high penetration and aerobic and anaerobic nitrification denitrification, It makes the water more stable and is the best bio-filter material.