This saddens me greatly... I'm not sure what it is though Possibly nute burn?
What have you fed them lately?
I personally find that when you encounter a deficiency, in a soil grow, its best to wait a few days to see if it will spread to any other growth. Usually if it isn't major the plant's new growth will be unphased and you can simply clip off the infected leaves and what not. I mean no disrespect to ya at all berry, your my bro but I think that you are rushing this just a bit. Your super eager which is good but you have to learn a bit more patience. I think your trying to do to much to your babies at once. Like I said, no disrespect at all, I just would hate to see those lil ones not make it b/c they were over-done, they are very pricey im sure. You've got to give plants time to take things in, that's all.
Didn't your last soil grow end like this?