New Grow LEAF PROBLEM! 2 week old g13... Please help!

Hi. Im a first time grower but with some experience from watchin friends do this. Ok, so my setup is kept all time at 60% humidity and 21-22 celsius. Seeds were G13 and some Northern Lights. Planted in soil 11 days ago. Under flourescent tubes 24 hours a day for now.
Some of the plants developed really nice and big, so i even did a transplant in a larger pot.
A few days ago ( even before the transplant), some of my leafs turned a little yellow and some are pointing downward and some upward..
Im holding them on Hesi grow kit, small quantities for the moment (like in the hesi manual).
Ive attached a few photos.. if anybody could point me a way so i can heal these little babies id be greatful!

ps: if they are 11 days old now.. when should i start putting a slight breeze on them? (for stronger twigs and all that)

Not sure, but maybe could be an overwatering issue? Are you waiting for the soil to dry before watering?

Check the Ph of your water and soil. They'll benefit from a fan blowing on them now.

wrap tape around them cups, non clear tape. roots+light=bad. Have you given them nutrients? do you have holes in the bottom of the cups? it looks like your overwatering and like someone else said make sure your soil ph and the water you give them are in the proper range, otherwise youll get nutrient lockouts.

like the others said overwatering.....clear cups are not the issue.. but are also bad for root delvelopment ! what soil are you using i noticed it has no perlite? your water drainage is most likely very poor... which is drowning your roots and since you your using crap soil(no offense) your ph is probably too acidic , invest in some fox farms ocean forest or roots organic soil and you'll be rewarded with healthy lookin plants. good luck live and learn my friend by the way your humidity and temp are perfect !

Thanks for the quick response everybody! Ok, i didnt know roots+light is a mistake. Gon' go buy some opaque cups in a few mins.
Watering right now is 1/day.. 2 substances...one with SuperVit and one without.. and making a rotation (1day w/ supervit, 1 day without) started with 2.5ml/plant (first 4-5 days), then 5ml and now im at 10ml per plant. (of water with nutrients - hesi guide)

I dont have a Ph meter yet, planning on buying one, and yes i dont have any holes in the bottom of the cups..
I wanted the next transplant to be directly in the big pots.. but oh well. I want whats best for them.

PS: the soil aint crap. Its really a good soil (the best one for the job - ive got a friend that raised 2 generations all the way to harvest in this same soil). But maybe i should put some perlite. (not sure what that is right now). Im off to my local store. Updates later. Cheers

I would go with the ph and the overwater as well.... make sure your not giving them too much when you do water, I mean let it dry out....

Ok. back. got some pots, perlite and im doing the transplant. Any ideea how much perlite % and how much % soil i should mix?

Back. Plants up and running in perlite soil. Thanks for your help so far ! Any ideeas on improving this grow place, are much appreciated. Here's some photos.

beautiful ! sorry i assumed you where using (crap soil ) it's just most premium soil already has perlite in it....i would say 20% - 30% perlite ..if i were you i'd stop using all those nutes,i dont have experince with the ones your using but i know for damn sure nuting every other day is a big no no especialy if you dont have a ph meter (all nutes change you ph in some way if it's not buffered) seedlings and small plants need NO nutes for the first few weeks of life...lay off the nutes trust me

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I always put some gravel in the bottom of the pot to ensure good drainage when I'm planting in dirt. The leaves will go yellowish is they are overwatered.

A good basic soil is 3 parts good potting soil, 1 part perlite and 1 part worm castings.

maybe its not THE BEST but where i live i couldnt find anything else.. probably when ill change to big pots, ill add some proper soil