When things go wrong after changing something the best first thing to do is flush the nutrients out than start with 10% food and go from there.
Twisting leaves can be caused by stress and to much nutrients.
Best of luck
If u are severely nute burning your plants, that may be the best way to go, but flushing and lowering the nutes on a deficient plant will only cause more damage. I do agree on lowering the nutes, but never to 10% strength at this point in a grow.
I think it is better to make an educated guess at what is causing the problem and change the one or two things at a time to figure out the real problem. Otherwise u never learn.
IMHO, either ur ec and your PH is/was too high, causing micronutrient deficiencies along with some burn. The high PH will make micronutrients unavailable to the plant, causing twisty spindly new growth. At the same time makes the ph go lower because of the excessive nutes in the water.
Or u have light leaks.
I would check for light leaks, bring the ph down to a 5.2, ec down to 1.5, half bloom and half veg nutes until week 3, then start a strong bloom feeding program like u are doing now with an e.c. of 2. When u have it dialed in the PH should slowly rise daily and e.c. should should go down slightly. If its the oposite, u are over feeding or humidity is too low. I srart my Ph at 5.2 and once it hits 5.8 I drop it back to 5.2 and repeat. If u have low humidity just make sure u top off the res with fresh water more often than normal.
i have some seedlings i started on 11/21/09 i have been spritzing them with water a couple of times a day i have them in a DWC system but two of my plants have twisted together at th roots the plants themselves have an abundant amount of foliage compared to most i have saw at this age i have them on 24/0 you can check my photos on rollitup on morning they just started to curl slightly and they don't feel as strong as they used to also i dont know if the hieght is right they are around 8in.tall and they spread really wide around 1 1/2ft i am starting to see very tiny dk brown spotting on my roots is this to worry about?