This product is filtered with high-quality ceramic rings and biochemical cotton, which can effectively prevent the water from turning yellow and smelly, and make the water clearer. The specially processed polymer air stone can extract oxygen molecules in the water, efficiently supply oxygen to the fish tank, and effectively cultivate bacteria. , circulating oxygen, filtering impurities, simulating the ecological filtration of nature, forming a natural ecological food chain, more scientific and environmentally friendly, and more thorough filtration