Glad to see you're back on track. I had the same problem and cal mag helped me.Okay, I banged up the nutrients to roughly 800-900 ppm.
Then I added some cal-mag.
All the plants look MUCH BETTER!
I think it had major deficiencies, phosphorous and calcium and Magnesium and nitrogen.
Realizing my tap water was only 40+ ppm I desperately needed to add the cal mag.
My plants are growing so much more vigorously now.
I'll post pics when I get home tonight.
Thanks a lot everyone for the great and helpful input!