I got a CO2 tank that's got a dip tube in it to fill paint ball guns, does that need to be removed before I fill it or is that fine?
yes you don't want liquid CO2 getting into the regs . I would just exchange
'The taxpayer: That's someone who works for the federal government but doesn't have to take the civil service examination.'- Ronald Reagan
can't you use that to fill smaller tanks if you wanted to go that route?