Order new gas/Rex regulator?
I just noticed my reg is on "order new gas" already. That's a ten pound cylinder In 2.5 months! Its a 135 gallon and I'm pumping the gas in with both a Rex reactor and mist through a powerhead. I have finally gotten my PH at 1 degree below sample left out over 24hrs. Algaeless! So I need to find better ways to dissolve co2? I guess fifteen dollar every three months is a small price for an algae free tank! Anyone with the Rex setup, how much gas do I have left when at the top of "order new gas"?