1. Combined with Water Flow: It cleverly uses the water flow in the aquarium to refine the gas when the water flow passes, enabling the refined gas to spread more quickly throughout the aquarium with the water flow, improving the utilization efficiency of the gas. 2. Optimize Water Quality: By refining the gas, it promotes an increase in the dissolved oxygen content in the water, improves the dissolved oxygen environment of the water body, helps maintain good water quality in the aquarium, and is conducive to the healthy growth of aquatic organisms. 3. Wide Adaptability: It is suitable for a variety of aquarium filtration systems, whether it is upper filtration, bottom filtration, or side filtration, etc., and can cooperate well with them to play its function of refining gas at the water outlet.