Strange thing though....I'm runnin' FFOF and I have a couple of times now. My runoff comes out pretty damn low too, around 6.0, BUT my soil's ph is at 6.8.
I water with water that is phed @ 6.5 so it's odd that my soil would be 6.8, water is 6.5 and runoff is sometimes lower, around 6.0...