Every thing else in my aquarium has been going smoothly except for the damn CO2. I just filled up my tank yesterday and before that only a month ago tops.

The gauges read (left to right gauge) ~60 psi and almost 0...

At first I thought there was a leak (fixed it) but now I think it has something to do with the regulator.

I have no clue whats up and going to fill up my tank every month is not something I should have to do.

Its a 5lb catalina aluminum tank on a 29g aquarium currently being dosed at 2-3bps.