CO2 problem

[4ptbuck]

Pressure in the regulator doesn't tell you much.
If there is liquid CO2 in the tank, the main pressure will be 8-900 psi. It is dependant on temp.
If all the liquid is gone, pressure will slowly drop.

In my FW tank, I am bubbling at about 10 bubbles a second 7x24. A 10 lb tank will last about 6 months. Once I am out of liquid and pressure starts to drop, it'l last about 2 weeks.

To accurately determine CO2 volume, look for the TARE weight of the tank. It'll be stamped on the tank. Or go weight your empty tank.

Once you fill up, guess what,... you'll have 10 lbs of CO2 in your tank.

Connect all your fittings and do the soapy water trick. If you are loosing that much CO2, you have a leak on your high pressure side.