I am a newbie to homebrew. I have my keg, co2 tank etc. I will finish my first keg in about one week and have my next batch kegged into a seperate keg before my first one is finished off. When I carbonated the first time it took a few days and I dont want to have to wait this time when I keg my second batch of beer. I want to be able to unhook my first keg and start drinking out of my second. How does one carbonate the second keg and have it ready to drink when one only has one co2 line and tank? If I take my co2 off the keg I am drinking out of I dont know how long that keg will remain carbonated while I am charging keg #2. Plus I dont know how long it takes to carbonate my keg 2. Any help would be appreciated