unknown problem, please help!!

my leaves are curling....
but not like a taco, like a ribbon, i have pics..
some facts...
i have some hydro, most soil, in veg mode...
the soil are in 3 gal bags, transplanted from 16oz cups 3 days ago..
when in cups they were not that happy,
they were turning yellow, but the hydro was fine...
then just afteri transplanted the soil ones into 3 gal bags, all my young leaves started curling under... even on the hydro...so i dont think it has anything to do with the transplanting, or the water/nutrents i gave them.... the only thing i canthink of would be the neem i sprayed for the first time...
however evreyone here i have talked to says neem wouldent do that.... is this true?.. if so what could be causing this problem?...
if it is the neem, what do i do about it now?....
also they are on a 24 hr. light... have been for a month...
could that be my issue?... i would test it... but i dont have a timer yet...
any help/ thoughts on the matter would be geatley appreated...

You suffocated them with too heavy an application of neem. Did you spray to the point of heavy runoff, or mix the concentrate too strong? Less is more with that stuff- VERY fine, light mist. Let dry. Wait a day or so. Mist again. REpeat until there is a slight gloss to the leaves. Then maintain with weekly mists. SMC leaf wash is similar, but can be applied more heavily without risk.

BTW next time you post troubleshooting pics, you gotta get better lighting on them. It's lucky your problem's symptom is SHAPE not COLOR...

Had a friend that used neem to combat spider mite done the same thing so he stopped using it and made up a teabag of tobacco and that worked on the mites. :)

thank you for the input...
i thought it was neem, but my partner in the deal dosent think so... and hes the one who acculey applied the neem,
i am kind of a newbee, but hes done it before...
and apparentley hasent had this problem...
if it is the neem, i am going to have a hard time talking him out of changeing anything...." i do exactley what i have done before , becouse it worked" is what he says.....

and i know i have low quility pics, but its the best i could do , im worken with a built in webcam

LOL! Lose your friend and start reading. Those things are FRIED!