Review on 🐠 AZOO Aquarium CO2 Pressure Regulator with Magnetic Valve and Bubble Counter, Stainless Steel Check Valve, and 10FT Silicone CO2 Proof Tubing (4/6mm) by Jennifer Shetty

This regulator is designed to fit a foreign manufacturer's gas cylinder outlet. If you still want to buy this regulator and live in the United States of America, you will need to buy an adapter. I bought this regulator and after trying a few different things I found that the 22mm to 22mm aquarium adapter, the pinless CO2 regulator adapter (also available from Revain), successfully converted this foreign regulator into a American standard tank converts. Note, however, that the adapter I mentioned did not come with a nylon sleeve to prevent CO2 leakage. Therefore, if you still love this regulator and live in the US, you will need to purchase additional items for a total of about $25. Second, the regulator knob has little to no effect on the low pressure setting for your bubble counter. I can regulate mine all day but no matter what I try it's 1 PSI or it literally crashes. I understand you may only need 1 PSI, but why would you need a control knob or a second sensor? Also, it takes some time for the controller output to "settle down" when you first turn it on. I've noticed that it takes about 30 minutes after the timer activates to set the correct flow. Also, sometimes the flow after shut off is too high to replace the water. I finally have no more problems with leaks after modifications and sticking tape on the bubble counter.