Features: The double stage CO2 regulator ensures stable gas flows for aquarium plant with its efficient pressure reduction design, protecting equipment and enhancing plant growth through precise carbon dioxide dispersion. Featuring a high precise double gauge systems and electromagnetic valved control, this device enables real time pressure monitoring and automated CO2 supply adjustment via timer for optimal water environment. Great for novice and experienced aquarists maintaining planted tanks, compatibility with various CO2 cylinders ensures easy installation across freshwater ecosystems. Perfectly operate of home aquariums or professional water setups, maintaining consistent CO2 levels to support while preventing pressure fluctuation that stress delicate underwater plant. Use corrosions resistant aluminum alloy, this pressure regulator withstands humid aquarium condition while delivering longlasting performances for thriving plant ecosystems. Specifications: Component: Aluminium Alloy Product Size: As pictures shown Type: 01/02 Package Includes: 1PC Aquarium CO2 Regulator note: Please allow 0-1cm error due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color the item.