nutes won't be the problem. a plant can be malnourished and sickly and still bud. Budding is initiated by a regular cycle of 12 on and 12 off once they are mature enough to flower. Clones are mature enough to bud as soon as they get roots since they are the same age as their mother. You say your plants have been vegging for about 2 months? I don't see any pics in your gallery so how many nodes do they have?
The droop can be caused by over watering, under watering, or heat stress (or almost any other kind of stress for that matter).
I noticed that you said you turned your lights off. You should really get a timer. It's hard to maintain a regular on/off schedule doing it manually. I know, I tried for a couple of weeks. Also, what is the light temp (2700k or 6500k) of those fluorescents? You should be using 2700k for flower.
Hope you get this one figured out buddy!