I'm trying to come up with the most cost effective way to have kegs both force carbonating at 20+ PSI and (other) kegs being served at 10-12 PSI. Obviously, I could buy an entirely separate regulator and CO2 tank, but that can be quite expensive.
So far my only other idea has been to attach a manifold to a regulator on a CO2 tank and attach a second regulator to the outlet of that manifold. I'd then attach a second manifold to the second regulator. The first regulator would be run at force carbonation pressures while the second would be run at serving pressures. This all seems a bit Rube Goldberg-esque but I'm curious if anyone's either tried this with success or has a more practical idea.