Luarg2,
You are doing great. One of the things
that first timers will inevitable do is to
over think the little issues. The smallest
one, is just the runt of the litter. Just keep
giving them light(18hours a day) and dark
(6hours a night). You will do fine. Quit those
nutes. This is purely my suggestion.
What type of soil are you using? Most store
brands (MG) already have nutes in the soil.
That's all you need. Make those plants work.
No more nutes, or at least way less.
More CFL's if you can afford it and can easily
dissipate the heat that you come with them.
Keep that fan on them and don't worry over
them too much. Think about letting them grow
for now, and potentially purchasing a cheap
250w hps to flower with. Good luck, and start
a journal for this. People will jump in to help.