You need to fill out the troubleshooting form first off. Second, do not take any advice until you fill out the troubleshooting form. Third, fill out the troubleshooting form.
You have given virtually zero information for anyone to be able to begin guessing at what may be wrong.
Fourth, do not spray your plants every day w/ neem.

DWC? What are your water temps? Go fill out the form. Otherwise you are not going to get much help, and any advice you get will most likely not be very helpful, and if you follow it, may in fact compound and create brand new problems for you. It may be that you have more than 1 problem.
My 2 cents.
8182KSKUSH Reviewed by 8182KSKUSH on . please somebody help and tell me what the hell is wrong with my plant. So this is what my plant is going through. they are on a 14 hour on and 10 hours off light cycle. they are def getting enough oxygen under there. Im using a dwc system that i made, nothing special but its my first grow and what not so i need the advice. please tell me how to fix this. it wasnt so bad yesterday, the first picture is yesterday, second is today. i changed the water without nutes because i thought maybe it was nutrient burn?? idk. help. please. Rating: 5