How long will my keg carbonation last if I remove the gas-in pressure? I currently have a single keg setup. What I'm considering is buying a second keg and carbing both kegs with my current set up. If I get proper carbonation in keg 1 and then connect my co2 to keg 2, how long will my carbonation stay decent in #1? Is the current 12psi in the keg enough pressure to keep the carbonation level where I want I to be? Will this setup do the trick?