Heeeelllllll no I dont use tap! EW! Haha.
It's r/o filtered right from the filter got at home. Takes ppms from 165 down to 13. Also, my pH is almost ALWAYS 5.8-6.2 it just stabilizes there with everything added and I never have to use pH up OR down. Ever. I've never seen it go anywhere higher or lower. This is why I'm so confused. It didn't happen last run with the same strains. These are cuts from them. The ONLY thing I've changed is adding calmag very very first when mixing up new water, before anything else, per GH instructions. I used to add micro, mix and dissolve well, then gro, mix, then bloom, mix, THEN calMag.