how's it goin? 2x Chrystal Rain 1x Unknown present from Nirvana.1 Month veggin

Hey fellow stoners

I am a 1st time grower and yesterday I got delivered a HUGE growing tent (120mmx120mmx200mm) and am finally able to move my 3 plants out of the closed, under a 600w hps.
They are all a month into veggin (with 2-3 days difference) and I was wondering if I could get a heads up on my plants for how they are doing? I know I nute burned 1 of the chrystals, and will be cautious from now.
I was also wondering why the leaves lost a bit of their "meat", meaning they got more skinny and drier than before. I dont think humidity should be a problem since i live in a high humidity zone(wales) and i link my tent ventillation with the air in the room which is always fresh.

I also have a question about another plant(last 2 pics). The 4rth plant was given to me by some friends, to take care of it, who watched it under the sun (which is not much in here) and it is 2 months into veggin. As you can see it is really thin , with bleached leaves. I transplanted it from the mud it was in into miracle grow soil and gave him low doses of Npk. Any way to save it ?

bumpidy bump bump

looks good. you seem to be well on your way. im on my first grow, and im working on two chrystals myself. i call it white light tho, due to its parents. use something aside from miracle grow if you can