Feature:1. Be made of stainless steel. It is strong, durable and efficient.2. Well-sealed caps and pipes, leak-proof, non-deformed, never loose.3. Professional pressure guage for pressure watching.4. Cheap, simple to create pure CO2 constantly by chemical reactions.5. Equipped with a safety valve, the pressure is greater than 4kg pressure will relief automatically, carbonated beverage bottle pressure is 8kg, safety is ensured.6. The safety valve supports manual pressure relief. When the pressure is below 4kg, it can be manually relieved by pull the ring of the safety valve. It is very safe.7. Bubble counter with check valve: Flow-rate of CO2 gas indication device and prevent water flow back into the bottle.8. Solenoid valve: To control the on and off of CO2 generator system using with a timer(not included).9. Any problem, please contact our store without hesitation. Honor to serve you!Specification:Just add citric acid, baking soda, water into the bottle, can produce carbon dioxide. The plant metabolic rate can be increased quickly, create the best growing conditions for fishes. It is the best choice of making CO2 equipment at home. It is easy, safe and economical. Raw material ratioA bottle: Citric acid 200g+water 600g; B bottle: Baking soda 200g+water 200g.Features:Be made of aluminum alloy. It is strong, durable and efficient.Well-sealed caps and pipes, leak-proof, non-deformed, never loose.Professional pressure guage for pressure watching.Cheap, simple to create pure CO2 constantly by chemical reactions.Solenoid valve: To control the on and off of CO2 generator system using with a timer(not included).Bubble counter with check valve: Flow-rate of CO2 gas indication device and prevent water flow back into the bottle.Equipped with a safety valve, the pressure is greater than 4kg pressure will relief automatically, carbonated beverage bottle pressure is 8kg, safety is ensured.The safety valve supports manual pressure relief. When the pressure is below 4kg, it can be manually relieved by pull the ring of the safety valve. It is very safe.Any problem, please contact our store without hesitation. Honor to serve you!Specification:Name: DIY CO2 generator system+solenoid valve+bubble counter & check valveMain material: Aluminum alloyMain color: Silver3 type optional: CO2 generator system/CO2 generator system+bubble counter with check valve/CO2 generator system+bubble counter with check valve+solenoidRaw material ratioA bottle: Citric acid 200g+water 600gB bottle: Baking soda 200g+water 200gNote:1. The package does not contain containers for reaction raw materials. Please prepare 2* 1.5L or large plastic beverage bottles (coke plastic bottles are the best). Do not use bottles or beer bottles to avoid bottle accidentally cracking or exploding due to excessive pressure in the bottle.2. Boost pressure operation: If the pressure gauge shows that the pressure is too low to reach 1KG, the boost pressure operation is required. Customer needs to open the trim valve to release the gas, then close the trim valve and shake the bottle (the AB bottle is shaken together) on order to react the raw materials faster. Repeat the operation, and then observe the pressure until the pressure rising. If the pressure achieve the ideal pressure you could stop the operation. The best starting pressure is 1KG.3. Don't open bottle directly when there's still on pressure, please wait for its automatic pressure release.Package Information:Package size: 22 * 12 * 6cmPackage weight: 475gGift Box PackagingPackage List:1* CO2 generator system1* Solenoid1* Bubble counter with check valve1* Pressure gauge1* Safety valve1* Fine adjusting valve1* 1.5m tube2* Suction cup1* ManualPackage List:1* CO2 generator system1* Solenoid1* Bubble counter with check valve1* Pressure gauge1* Safety valve1* Fine adjusting valve1* 1.5m tube2* Suction cup1* Manual