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Old 04-15-2020, 03:03 PM   #4 (permalink)
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Default Re: 5lb CO2 tank empty in 2 months

depends on the aquarium size and amount of CO2 you dispense and whether or not you have the CO2 regulator on a timer.

For me, I use less than a bubble per second on a 14 gallon tank. My CO2 shuts off when the lights do, (on for about 9 hours a day) and I haven't filled it up in over a year. Granted, it is time to refill it now after 19 months.
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