With this splitter you can easily connect up to two or more CO2 diffusers from a single CO2 cylinder. The fine adjustment valve is used to finely adjust the amount of carbon dioxide, this valve with high adjustment fineness, there is no air leakage under the high pressure system. 4 kinds of channels optional, can be used in multiple aquariums at the same time. Keeping your aquatic plants healthy, more convenient and saving energy. Features: DURABLE AND EASY TO INSTALL: Being made of aluminum alloy and copper, strong and durable. 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 tank. Each outlet is fitted with an individual needle valve allowing precise regulation of the CO2 flow rate, precisely adjustable every 3 seconds 1 bubble. G1/8 OR 46MM SUPPLY HOSE: suitable for G1/8 interface (need to unscrew the nut) or connect to 64mm air hose (inner diameter 4mm, outer diameter