Aquarium filter media Far-infrared bacteria house besides can emit strong far infrared rays, increasing its ability to transport oxygen, increase the oxygen content in the water, after 1800 degrees centigrade high temperature firing, it special nanometer pore structure provide nitrifying bacteria adhesion of parasitic wider area, more effective purify water quality, can be beneficial bacteria breeding in the shortest possible time, quickly decompose harmful substances.Reduce moss, algae, viruses, strengthen fish immunity, create a good clear water quality.