1. Efficient Bacteria Cultivation: With a unique multi - faceted three - dimensional structure, it has a large specific surface area, providing sufficient attachment space for beneficial microorganisms such as nitrifying bacteria, accelerating the establishment of the nitrification system and purifying water quality. 2. Good Air Permeability: The spherical design ensures smooth air circulation, allowing nitrifying bacteria to work efficiently in an aerobic environment, decomposing harmful substances in the water and maintaining the ecological balance of the water body. 3. Strong Water Purification Ability: It can effectively remove pollutants such as ammonia nitrogen and nitrite in the water, reduce the concentration of harmful substances in the water, keep the water in the fish pond and aquarium clear and clean, and is conducive to the healthy growth of fish. 4. Good Versatility: The 32mm size is suitable for a variety of common fish pond and aquarium filtration systems. It can be used alone or matched with other filter media to improve the overall filtration performance.