need some advice on improving

I have 2 clones about 2 months old, and just transplanted them a couple days ago into 2 gallon pots. since then the bottom leaves have turned yellow rather quickly and the petioles are red im thinking a nitrogen deficiency but would like to get some second opinions.

as for my setup its a mere 2x2 foot area lit by 6 cfl's (26w 1750lumens) home made hood/reflector with a pc exhaust fan mounted to it. some crap miracle grow soil mixed with perlite or vermiculite (i forget). emergency blanket walls, small fan for intake and leaf movement. temps are in the 85-88F range under the light and 82 degree room temp, humidity is 62%. its hard getting temps lower living on an island but im may be getting an AC soon so thatll help. i blacked out my window but left a intake/exhaust hole for fresh air with a circulating fan next to it. no nutes yet but gonna get some soon, just not sure my local shops got anything good.

so do i have a nitrogen deficiency or something else? also if anyone has some tips for improving my grow please let me know what i can do. after these harvest ill be doing a grow room makeover with better everything :)

Sorry I cant be to much help. But when I have a problem I just spend a few mins looking at this guide. This dude is a god. Revised: The Complete Guide To Sick Plants,pH and Pest Troubles - PlanetGanja.com

tried to take a look at the link but the pages wouldnt load for me, ill try it again later.