educated opinions needed from those who have opinions

I'm in the 2nd half of my (soil grown) flowering session. There's a real bad finger curl on 3 of 4, very hard stems and mini buds. It turned out to be a low pH problem and a bad, I mean R-E-A-L BAD toxicity problem. The pH was only 5.8 but it took me 15+ gallons at 8.2+ to get the pH up to 6.2, and over 2 freaking hours to do it. I ran out of pH+ but the H2O here is 7.6 so I kept flushing. My question is this..... Hydrated lime in the flush will serve to raise the pH but will it do so without harm to my plants.
I'm gonna start on plant #2 tonight. If the lime will work, and work faster ill be able to get 2 & 3 out of the way. I got two 5 gallon buckets and seven 1 gal jugs ready to go as soon as the lights come on. Plants 5 & 6 are showing the same symptoms but not as bad as 2-3 & 4.