Kirstenstarted grow question 1y ago Ok guys, I assume all of us know at least a little about water PH. I need some expert advice. My soil PH is 7.0. I PH my water between 6.0 and 6.5. Which is important? The PH of the Soil, or water? If i need to lower my soil PH, how do i do it? Any dry ammendments that I can add?