seedling help

Hii all,
I just thought I'd give you all an update.
Ok, I went out and got more lights 4 100w equivelents. I think they seem to like it, still not much growth. I've started in the last 2 waterings some superthrive and some schultz plant food 10-15-12, is this stuff gonna work, I read somewhere mj need lots of N during growth, Do i have enough N? They seem to be getting yellower. Kinda bummed:( Oh well, first grow.
So, just took these pics, the yellowing, is it burning or a def. Oh,, I been doing half strength with the nutes, like 2 drops per half quart, and like 3 drops of superthrive to a gallon of RO water. The soil is hyponex with nothing in it but perlite.
Should I just transplant these bitches (hopefuly)
also, will pelletized dolimite lime work for my new soil mixture? I was gonna use FFOF, perlite, and a little D lime, and how much pellet lime per 6" container?
Do you think there ready HID's, I've got a 400w MH in a cooltube just waiting:)
Thanks for you feedback!

Yeah, though it is kind of early for feeding. I'd wait til you see 2 or 3 nodes and largly developed leaves before feeding or it could spell trouble for you

Thanks Strwbrryfldsfrvr.
I read that when the baby leaves start to yellow,they needed food.
It sure looks like a defficiancy of some sort.
soo, is pelletized dolimite lime safe to use on my plants? I need to mix up my soil:)