It's seems that they weren't happy in the small pots, I decided to transplant and see if the recovered.
A new seedling appeared.
Raised power of Mars Hydro TS 1000 from 50% to 100%
I'm not sure if the leaves are yellow because of lack of nutrients or excess, I'm experimenting with Bio Bizz All Mix.
I decided to lay back on nutrients for the moment.
@amir930, It's my first time with Scrog, I have the pics, but haven't uploaded them yet. Toped them a couple of day's ago, they're recovering very well and the small ones are catching up. Let's see how this one works out.