I have certainly run co2 scrubbers on my tanks at various times. If you can, try running the airline to the your skimmer so that it pulls fresh air from outside. Doing that gets me about .1 to .2 in higher pH. Scrubber using the stuff used in scuba rebreathers (calcium hydroxide, I think) gets a another .1 to .2
I only ever needed to run the scrubbers when the house was closed up. So depths of winter and summer.