Great idea sirAppreciate the replies. Only reason I thought about keeping the CO2 on the inside is I keep reading about how it somehow helps when it is cold. I plan to get a 10lb or maybe two if I go 6-8 kegs. I just assume I'll play around with pressure and need different amounts. This will probably be another year or so down the road. I plan on using my garage refrigerator and a few picknick taps on the first 2-3 kegs before expanding.