Over the weekend I finaly finshed installing my CO2 system into one of my tanks n found im lost on something here. What should the nob be set on? The co2tank is wide open n the nob i guess is some where set in the middle or so. The needles at 40. Ill post up the right number when im home.So what am asking is where should the valve be set at? Hi lo? Right now im at .5-1bps ok for now small plamt load