Hey Gen,

I am hoping that i could get some of your results. I was looking to build a co2 pH controller. I am wondering if it is cost effective as well.
I know if you already use co2 in the air then you should have all you need to make a co2 ph controller, along with some switches and meters. I use the Nitric acid and phoshoric acid as of now, but I to hate using corrosive chems for my roots on a constant basis.

All the info I can get would be appeciated, thanks