Review on 🐠 FZONE DC CO2 Solenoid Valve: Ideal Magnetic Valve for Easy-to-Install Aquarium CO2 System Regulator and Optimal Water Plant Growth in Fish Tanks by Haydee Strickland

If you want this to work with your pressurized CO2 system like the Fluval 45G you will need to buy a real regulator and adapters which cost around $50-100. The reason this solenoid is not working is because neither the regulator that comes with the Fluval CO2 kit nor the solenoid have a pressure relief valve. So technically if you turn the solenoid off overnight, pressure will build up and either rupture the duct. (that's the connection between the regulator and the solenoid) or the solenoid since it can only handle 120psi. Please leave a comment if you have a way to make it work. 3 stars.