Well I gave mine 30PSI for about 18hrs then dropped it to 15PSI in about 4 days it was "ok" after a week it was decent after a few weeks it held a pretty good head. Then towards the end of the keg I drop it to 12PSI seems to get a little too much head as headspace in keg increases. Just my .02 there's lots of methods of carbing your beer. You'll find the one that works best and gives you the best results. It's quite the addictive hobby.
Beer Plus Science = .....Good!!!!! By: Adam Savage