Help!! Leaves are curling down. 2nd Week Autoflower

When I woke up this morning the leaves on my Blue Himalayan Diesel were curled down. Last night I watered both my plants Critical + and BHD and added neem oil into the watering container as the instructions stated on the packaging. I have been having fungus gnat problems, but it seems to have cleared up. I have them in a 50-50 mixture of MG organic soil and MG moisture control soil. She is under 150 w hps light that is about a foot 3 inches from her. The fan is also blowing on the medium setting.

I thought it could be heat so I took her out of direct light. Here are pics of what she looked like yesterday and how she woke up this morning.

i had similar problems with my seedlings. the leaves would droop and they didnt look good. my problem was high humidity. droopy leaves means over or underwatering usually. if you dont have a hygrometer you should get one. if you have one, whats your temp/humidity? also, 3 inches from the plant seems a bit close imo, may lead to burn. you got a cooltube? heres a link to a site thats helped me out a great deal in diagnosing my plant problems: http://www.growweedeasy.com/marijuana-symptoms-pictures

3in"? You will have to move that light up at least 12" from seedlings. Hell even under cfl's you still should not put a seedling 3" under it. Plus you are using MG which is rich in chemical fertilizers then you raised the ppm's of your soil by adding neem oil in recommended strength instead of 1/4 strength for seedling. On top of that has the original soil ever been allowed to dry out throughly? If your soil has been to moist your plant is suffering from that so it would probably do more harm to flush the soil now.

Maybe just let the soil dry out for now, then go from there.