Just as an afterthought ...............
From ur pics ...... i may be wrong but it does look very orange in ur growspace which would suggest to me your using a light or lights that are red spec which is normally more akin to flowering.
what lights do u have over them????
If your intending to keep them in veg then i`d suggest u have a MH bulb or at least blue spec flouros or envirolights on them.
Might b just the way it looks on my screen but they do look like they`re under red spectrum there
Digi