Yeah man, Nitrogen deficiency is my final answer, especially after that last pic of them all under that light, they definitely look like they're a little pale. I'd go ahead and try and make them happy, but I'm not sure. The thing is, they don't really need much nitrogen during flowering, but what nitrogen they do need they use up from the leaves, turning them yellow. I don't know for sure man, but i'd think it would be best to get them stocked up on N before swapping over. Other than that one with the spots though, they all are looking great, just a little hungry.

I can't wait to see bud shots of these things.


But yeah, as far as that tall NL, LST'ing is the way to go. Don't be scared to get physical on them bitches with some string, they'll thank you later. Check out my log man, ever since we started tying, I've noticed exponentially better growth simply because of the better light distribution. http://boards.cannabis.com/showthread.php?t=90199