With this splitter, you can easily connect up to two or more CO2 diffusers from a single CO2 cylinder. The fine adjusting valve is used for adjust the amount of carbon dioxide finely, this valve with high adjustment fineness, there is no air leakage under the high pressure system. 4 kinds channel optional, can be used in multiple fish tanks at the same time. Keeping your aquatic plants healthy, more convenient and save energy. Features: DURABLE AND EASY TO INSTALL: Be made of aluminum alloy and copper material, strong and sturdy. Also, easy to install and disassemble. FOR MULTIPLE FISH TANKS: With this splitter, you can easily connect up to two or more CO2 diffusers from a single CO2 cylinder. Each outlet is equipped with an individual needle valve allowing precise regulation of CO2 flow, adjustable to every 3 seconds 1 bubble accurately. G1/8 INTERFACE OR 4*6MM AIR PIPE: Fits for G1/8 interface(need to unscrew the nut), or connect to the 06*4mm(inner diameter 04mm, outer diameter 06mm) air pipe, the nut is for fixing the air pipe prevent the air pipe from collapsing. 4 TYPE CHANNELS OPTIONAL: There are 4 types channels optional, can be used in multiple fish tanks to meet all your needs. WORRY FREE WARRANTY: Any problem, please contact our store without hesitation. Honor to serve you!