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    My CO2 tank got empty overnight

    Hi, my CO2 tank got empty over night, before that I had it running at about 2 air drops per second on a 75 US Gallon tank, the CO2 tank was 5 pounds with a tunze double gauge regulator controlled with a solenoid tunze solenoid, the CO2 tubing was from Aquatek and the bubble counter was a fluval...