Quadruple attack. First grow jitters.

Hello people.
A newbie I am, but one that has done his research. Needless to say there comes a point where research isn't enough and the expertise and knowledge of more seasoned growers, like yourselves, is required. Your insights are duly appreciated. I started off with a total of 6 seeds all of which germinated except 2 so I ended up with AK47, Bluecheese(1), Amnesia Haze, and Bluecheese (2) (arranged from eldest to youngest) all feminized. They were all started at different but close time intervals. I have them under 4x32watt and 1x26watt (6500k) cfls. I don't feed them much of anything only a 200ppm with superthrive every other watering. Temps range from 70-79 F and humidity anywhere from 38-60 percent with fans blowing everywhere. I have them on a 24/0 schedule and sometimes 20/4 when I can. they also get a few hours of natural sun everyday.
AK seems to be going great, moved it to a bigger pot and put her under a 400watt MH It looks healthy and on schedule. I had an issue with the pH of my soilless mix earlier but I fixed it a few days ago and BC1 seemed to be the most affected by this issue but after adjusting its pH it seems to be recovering although it's still a bit yellow-lime in color and its leaves are pointing down, so I am wondering what the issue may be, if any. Amnesia looks fine other than the cotyledons being yellow, an indication to start feeding her perhaps? I am not sure I should be concerned. BC2 is still new, but I noticed that the leave tips of the first set are dry and brown? too close to the light perhaps? Is there anything I can do to get these babies healthier?
Any helpful advice and/or opinions would be appreciated. I plead you to help be a better care giver for these girls, maybe one day soon these girls will be taking care of me

pictures:
AK47:

BC1:

Amnesia:

BC2:

You dont need to move anything until the roots basically fill the pot of dirt. Only then move them or else you get a bunch of dirt that doesn't get used. More roots mean more bud after flowering (usually). Dont water until the dirt is completely dry. Youll be able to tell when you pick up the pot. Then water to drench the dirt and let it drain. Dont drench the dirt early in the plants life in a big pot, you are likely to have problems. You should be shooting for the plant to be able to drink all the water within like 4 days max. Faster is generally better.

I started them all off in a 1/5th of a gallon pot, which they are all still in except for AK which became root bound so I transferred her into a 1 gallon pot. I think she took well to it, everytime I check her I notice new growth. I am still unsure of the rest of the bunch though, almost was gonna tos BC1 if the pH thing didn't fix it, it was the reason I planted BC2, and because I wanted to compare the original strain(BC2) to the freebie i got(BC1) ....Anyways I put BC2 further from the cfl now, im hoping that it recovers from that.