my plants are turning brown and drooping

Whats up guys, This is my first grow and Im having a hard time finding out why my plants are drooping and turning yellow/brown. im using a 4 gallon drip head system with 10 plants. i have a 400w hp bulb. im in my 19th day and my plant looks like this... Can anyone help me.

back off the nutes. what are your temps?

I would agree with nick on this one. Your plants look beautiful other than the slight burn.

i have no nuts in there @ this time except for superthrive........

and the temp is @ 75-85

ST can f up a grow very fast, do not give them any more.

that willbe a nute def. you need to feed her. good luck. and to much super thrive will hurt your plant. how mush do you give.

i give it 1 drop per gallon...so should i just run water with no nuts?

ya thats not your problem, its lack of nutes.