I was curious what soil itself tested, looks like just a teeny bit on the high side but nothing major. When you feed, most nutes make the water acidic. If you balance the PH in the water when you feed, just leave it a little on the low side, it should all even out. I use FFOF. Last year I had to learn about adjusting the PH when I fed, it really knocked the PH way down. I corrected what i was putting in but my runoff was pretty acidic. Plants turned out just fineI've been told it's what you put into the soil that matters more than the runoff.
I wouldn't mess with the soil, just monitor what you put in