The filter material is made of multi-pore volcanic rock with high density of porosity which is most powerful infiltrating ability and also provide the best area for growing bacteria. Time lasting for both freshwater and marine filter system.
Providing best growing area for nitrifying bacteria and beneficial organism. Can remove the ammonia and harmful substances then purifying water.
According to the experiment, the rate of developing bacteria can reach 47,000 per canister.
The efficiency is 1.5 times of biofoam 6~times of ring