Still hard to tell, but looks good from here. Your starting to get shoots from between the sets of large fan leaves, and looks like there is no sign of nute burn. Questions:

What kind of light are you using?

How close is it to the top of the plant?

What kind of soil, soil amendments, nutrients?

What is the PH of the water your feeding them with, and if its off do you adjust it to the correct specs?

ect... stuff like that would also help regarding any good advice. But over all looks good so far. Also how old are they? and do you know the strain?