I have a Belgian Golden Strong and an American Brown that are both going into the same keggerator that share the same manifold. I would like to carbonate the Belgian at a higher value than the American Brown, but I am not sure how to maintain this level of carbonation with the shared manifold. It does have valves on each port so i can switch if needed, but I am looking for a "set it and forget it" method.
I typically set my CO2 pressure at about 20 and rock the keg for about 3-4 minutes then seal it off and let it sit for 24 hours or so to get the initial carbonation, but I don't understand (at least) two things:
1.) How can i really control the CO2 level for each in the initial carbonation and
2.) How can i maintain the proper levels after the initial carbonation with a shared manifold. Even if i get a separate regulator to allow a lower pressure on some beers, I have been led to believe that serving pressure is around 5-10 psi, and i don't see logically how a set psi can maintain variable levels of carbonation.
I do have one gas line on the manifold that is shorter (approx 3 feet) than the others (each approx 5 feet), so suppose I may be able to get close from what I understand about psi vs. gas line length, but I am looking for a more authoritative answer than "that might do what I want".