Originally Posted by pescadero
All CO2 tanks contain liquified CO2 but some tanks have a siphon tube to draw the liquid from the bottom. These are used cooling equipment or refilling smaller tanks. You just want the gas off the top so ask for a "dry" tank.
yea they guy said pretty much the same thing the liquid ones cane be used to fill up paint ball canisters and such or you can take your tank turn it upside down and do the same
it's just that fancy dipstick thingy costs a bunch more