A:Answer So.... it seems that there has to be a leak somewhere - either at one of the hose connectors or it could be at the pressure regulator or gauges. I would go old-school and get a clean spray bottle, add some warm water and dish soap and spray it around all the connectors, at the bottle, the gauges and the regulator and see where the bubbles start popping up. I have the same size CO2 bottle and I've gotten about 6, 1/4 kegs off it so far on the same fill - and am still using it. On my old unit, I used to have a leak in the lines somewhere and until I found out where the leak was, I would turn tank on to charge the keg, then turn it off. there would be enough pressure in the keg to dispense 6 to 10 glasses before I would have to turn the tank on again for about 10 seconds to recharge the keg and then turn it off again. It was a bit of a pain but it kept me from running out of CO2 all the time until I found out where the leak was and fixed it.