Super diffuse efficiency to get the best dissolved effect. With the function of CO2 bubble counter. Designed for screw lock, don't worry the tube loose off and caused damage. Compact in size and easy in installation with attaching sucker. Adopt the ceramic disc of high pressure (approx. 2-2.5Kg/cm2), we suggest to match up 3Kg/cm2 of the use-pressure of regulators. Install super diffuser on the bottom of the aquarium, to get the best CO2 dissolved effect.