The rate of metabolism of plants can be quickly increased, create the best conditions for the growth of fish. This is the best choice when making CO2 equipment at home. It is easy, safe and economical. Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. Be made of aluminum alloy. It is strong, durable and efficient. Well sealed stoppers and pipes, tight, undeformed, never loose. Professional pressure gauge for pressure observation. Cheap, simple in continuous production of pure CO2 in chemical reactions. Safety valve supports manual pressure removal. When the pressure is below 4 kg, they can be manually reduced by pulling the safety valve ring. It's very safe. - Inner mesh panties Name: DIY generator CO2 solenoid bubble counter and check valve Main Material: Aluminum Alloy Main Color: Silver Ratio of raw materials: List of packages: 1 x CO2 generator system 1 x electromagnet 1 x bubble counter with check valve 1 x pressure gauge 1 x safety valve 1 x precision control valve 1x1.5 m Pipe 2 x suction cup 1 x Instructions! Information about the package: Package Weight: 475g Gift wrapping Note: 1. The packaging does not contain containers for reaction raw materials. 2. Charge pressure action: If the pressure gauge indicates that the pressure is too low to reach 1 kg, the charge pressure action is required. Repeat the operation, then observe the pressure until the pressure rises. If the pressure reaches the ideal pressure, you can stop the operation. The best initial pressure is 1KG. 3.