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John5528
There is a CO2 regulator Aqua Medic. I noticed that in the mode when CO2 is not supplied, the pressure on the manometer shows 2.7-2.9 bar, and when gas is supplied, it drops to 1.9 bar. The instructions state that the operating pressure is 1.5 bar. If anyone uses this regulator, please let me know how it behaves.