5lb CO2 tank for Calcium reactor.....how long before refill?

[nanoguy]

How long will a full 5lb CO2 tank last......3,4,5 months before refill?

[clutch]

i would say it would have to vary because how much you use. Bubble rate. i set mine at 12 lbs so i let the tank pressure gauge to about 100/200 lbs... to be concerned

[jim.l]

I run about 70 bubbles/minute and have to refill about every 4 months. Run the tank empty as long as you're getting the correct bubble count. MTC MiniCal unit.

[AZDesertRat]

Mine lasts 7 or 8 months.