I have experienced this kind of growth when I first began hydro. keep a close eye on your pH.
The twisting you see on your new growth is a dead give away that pH is a part of the problem.
fix one thing at a time and rule that out as part of the problem.
This is not a magnesium deficiency. That I am for sure about.

Hope this helps.
GanjaRobPDX Reviewed by GanjaRobPDX on . Magnesium Def. I have this issue where some of my new fan leaves are single fingered.. I was told it was a Mg def. Heres a pic, what in y'alls opinion might this be?281489, 281490 Rating: 5