Thanks hydro, I knew people could do this because the meters are out thereto do this very thing. I think it's brilliant.

Why do you prefer chemicals? Are they just easier.

Thanks turtle.
Gen Reviewed by Gen 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