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 Erin Wright

I wanted to use it in combination with a timer output to control my homemade CO2 system in my aquarium. (citric acid and baking soda). Unfortunately, when the power went out, it only slowed the flow enough to be noticeable. After unplugging it to see if I could fix the issues, I realized I could actually blow air through it with my mouth while it was closed. (btw, don't do that with a good one, you introduce moisture) I thought about returning it but it was cheap and I'm lazy. Eventually I might try to take it apart and sand the insides with fine sandpaper, but like I said, I'm lazy.