Review on Aquarium CO2 Regulator with 12V DC Solenoid - Large Dual Gauge Display, Bubble Counter, Check Valve - Fits Standard US Tanks - Accurate and Easily Adjustable Flow Meter by Barbara Freeman

I am buying this to replace a Milwaukee Co2 regulator that has braked on me 3 times (solenoid, low pressure and main diaphragm). I wasn't sure about the setting of the single high pressure gauge. Install and set up in a minute with simple, visual instructions. The entire construction is solid and appears to be of high quality. The high pressure is small but readable (100psi increments). There are no leaks and the needle valve seems even better than it was in Milwaukee. The price is great and the product is perfect for precise CO2 injection. Thank you for this great product. The small metal key to attach to the tank is a nice touch and perfect for the job, also an o-ring is already installed on the regulator. and they even sent you a replacement. Sad Revain doesn't have 6 stars. I will come back in a few months to check again. Update 1: - The number of bubbles is stable when the solenoid opens in the morning - The solenoid is warm, not hot, you can hear a normal click compared to my Milwaukee.