PH Down in an organic/notill setup?

[George]

There’s lots of useful info here in OG, it’s just a matter of searching for it, this could help also with this issue …

First organic / living soil grow, looking for advice

Living soil can self-adjust for normal pH ranges of about 6 (acidic) to 8 (alkaline) for short periods, but it doesn’t do well if you keep applying wacky pH water in either direction. 7.5 might be OK if it never goes much higher, but since it does, that seems a likely culprit. I think Gpaw hit the nail on the head that maybe high pH and low temps are causing a lockout. That’s one of the reasons I use full peat moss as the base for my soil, oyster meal and gypsum instead of lime, and R/O water…