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
knowledge Reviewed by knowledge on . using CO2 to control ph I just found out this incredible thing today. Using CO2 to control ph. Mountainman talked about getting a controller to build a ph adjusting machine. Someone posting about using CO2 to control ph. Armed with my new soda club machine ($79 Edition 1) I was ready for the challenge. Today I measured tap water with CO2 and without CO2. The same with R/O water. Seltzer water is plain water injected with CO2. Here are my results. Tap water with CO2 5.4, 5.0, 5.0 5.1 Tap water Rating: 5