WOW!!!! you really need o lower that ph. I use FFOF and when i water (or feed) I always ph my water to 6.5 to 6.6 and the run-off in FFOF is about 6.6 to 6.7 right where it should be. My "tap" water runs about 7.0 to 7.2 witch is also abit high BUT 8.0 WOW thats way to high. Do u have a ph meter?