Stem purple and hard, leave yellow. Pic

Hello, ok the problem i have with one of my clone is the stem are turning dark purple and leave are curling up and start to turn yellow as you can see in picture 1-3. Picture 4 and 5 is also clone from same plant same time but they are doing super great as you can see. Im not using any nutes at all right now because i tranplant these clone from hydropnic systrm to pre nute soil when i switch them to flowering cause i no longer like hydropnic, i prefer organic everything. But anyway i have 5 clone going into flower , 4 of them made it but only one didnt.(pic 1-3) please help me find out what is the problem with this plant so i know if i should throw it away or is there a way to fix it, thank you very much

1) http://i1203.photobucket.com/albums/bb396/Huynhh87/f2d2232d.jpg
2) http://i1203.photobucket.com/albums/bb396/Huynhh87/f3df5e7d.jpg
3) http://i1203.photobucket.com/albums/bb396/Huynhh87/bc8cf954.jpg
4) http://i1203.photobucket.com/albums/bb396/Huynhh87/8ab8cfac.jpg
5) http://i1203.photobucket.com/albums/bb396/Huynhh87/a02db37c.jpg

It looks hungry.

The soil is fresh with nutritent when i transplant with the other 4 plant. So i have to put the nutrient aside . I only think there is a problem when i transplant. Might be root problem, maybe shock? Plz hlp