I stopped phing because I read the same thing, ended up ruining my run, lockout is a bitch especially mid flower…. Learned the hard way to ph every time I add water…
I'm sorry you had to learn the lesson the hard way.
I've recently seen people offering that advice and in my opinion it's about the worst advice you could follow.
If you want to have smoother runs in soil;
add one level tablespoon of dolomite per gallon of
fox farm soil, it will stop soil pH from getting acidic
Add 20% coarse perlite to
Fox farm soil
check AND RECORD your runoff pH & PPM on a regular basis, once a week or at least every other week
Your grow will become smooth as silk & you'll hit a new level.
You can catch me at 'THE BEACH HOUSE' thread if I can help further or want to check out some of my grows, best of luck!