Ok. I have my kegs and fermenters. I about to buy a freezer for my keezer. I have an idea where I will be getting my CO2 tank. I was wondering about my regulator. I was wanting to have 2 kegs in my keezer for tapping. I was wondering if I need a regulator for each or is all I need is one at my CO2 tank. And If I want to transfer from fermenter to keg with co2 pressure, the will involve another tank and regulator?