I picked up a second CO2 tank at Industrial supply this week. The lady told me a pressure gauge showing tank volume was useless as CO2 is filled as a liquid and comes out as a gas (cold fill). She said it would always show full until empty, then drop to 0. So I just bought the gauge for regulation and set it at 10 PSI. Not sure how true that is, but the last few times I've changed a tank I can't remember it getting progressively lower. Anybody else have that experience?
On the subject of keezers, I'll show you mine if you show me yours
1947 International Harvester. yes, it's horribly inefficient, but it looked to cool to pass up
I built a dual stage temperature controller for about $30, so I can lager or ferment if I want to.