Need help, feel like im loosin my babies

ok im reposting tryin to get some answers.
My LayOut:
I am posting 4 pics not the best but work with me. I am using promix pro soil, Ph6.5 water purified through filter(a Pur water filter), i have given them a very small amout of nuts over the past week about 1/4 strength. They are 2 weeks old. started from seed. Under a MH light over 2 feet above them temp doesnt go over 86/87. 78 or so at night. Have a 20inch box fan bringing in air and a fan/vent leading out of the closet. Have an osciliating fan as well keepin my babies moving all the time. The walls are lined with reflective blankets and everything seemd to be going great. All of my babies are yearning for the light and have been growing very quickly. They are already puttin off an incredable perfume. Their BC mango plants and boy do they already spell like mango. Its unlike anything i have smelled before especially coming from bud. So all of my plants look great little to no nute burn (found 1mm of two tips slightly burnt). I have been giving them about 1cup of water every other day about an hour after lights come on. I started giving them a little nuts because my soil doesnt have any. I used 1teaspoon of fox farm grow big for 3 feedings and one feeding with 1 teaspoon grow big and 1 teaspoon big bloom to one gal of water this last feeding. Gave them just water today 2.5 cups each thought it might have been underwater cause the promix dried out and was coming away from the walls of my pots. I am also not showing any signes of yellowing and this is starting to worry me cause it doesnt seem like a normal problem. Could it just be the strain?

My Problem: All of the first set of leaves are turning an extreme DARK DARK Green, the very edge of the ends are starting to turn up slightly and the veins are becoming very prominent. This seems to be starting toward the tips of the leafs and heading in toward the plant. The new growth does not seem affected yet but the first set of real leaves have been changing quiet alot. It almost looks as if they are schriveling up but any time i have seen schriveling its usually downward and in towards the stem, the weight carries it down. Some of the leaves are also starting to twist themselves around. Maybe I found the first self rollin plant? Would really love some info/advice/help on the subject. Dont kno what im doing wrong or if im just over worried. This is my first time.

I did want to throw in their that I got 13/13 seeds germinated but 2 are deformed and growing very slow/irregular one gaint leaf growing at a time in a spiral fashion upwards to kind of describe it. Im still thinking could it be the strain? I havent been able to find anyone that has grow it

Besides the minor nutrient burn that you already know has happened the plants look fine. Usually when a plant twists weird it is trying to move towards light, I have lots of branches twisting and bending and growing odd due to side light in areas. The ones showing nutrient burn I would just ease off any nutrients for another week or so before maybe trying 25% strength like you already know and did

Good luck bud I have much worse looking seedlings I fully expect to live.

thanks lucky, i checked them again this morning and its still gettin greener, well almost black, with the veins sticking out a ton now and their gettin a paper feel to them, although they purk up with the light and seem to be gorwing. Anyone else have any suggestions. tried just water at the begining of last light cycle and their was a bunch of new growth when night time rolled around. so i dont kno if not using nuts helped