For now, I would try bringing it down with apple cider vinegar instead of your pool chems, and see if you can pick up proper plant chems asap. Cider vinegar isn't the IDEAL pH down, but as emergency pH adjustments go, you can do a lot worse, and there is something in it that the soil microbes acutally like- I'm not up on my mycos though so I can't explain it. lol.
What does the label on your pool chems say? I am interested in the actual chemical composition of them.