The first go-round you would have to take clones from all the plants. because you would'nt know the sex of them to take from only the "Best Females".
then once they sex you just get rid of those clones that came from males. After that they would always be female, unless they herm from stress. Am...
Theres a lot of leaves on that clone for only being two weeks old. I usally cut them much smaller . the less leaves the better is what ive been told. it does'nt have the roots to feed all those leaves or take 1000 watts yet. I would also say its pretty risky to trasplant now. i would wait for...
From what I've read about the Hempy Bucket method you should of started using a 1/2 to 1/4 strenth nute solution after the third sets of leaves which should of been about 4 weeks ago.
So with that said im gonna say their probably deficent at all levels and maybe over watered. IMO.
Looks like overwatering... I'll give you props for going with a hydro and co2 on your first grow. Thats pretty ballzy bro. Grow big or go home I guess...