Please help

One week into veg and everything looks great except for a few plant's leaves fringes are standing up (as shown in the pictures). What could be the problem?

Also my Blue Skunk is looking droopy whats that about?

Oh and I'm running an ebb and flow system with hydroton beads under a 400 watt hps light (20 hours light 4 hours dark) which is currently about 2 feet above the tallest plant
watering schedule is six times a day at 12, 4, 8, 12, 4, 8.
and I'm running the General Hydroponics line of nutes.

What are the temps at the canopy level.

running around 77 - 79 degrees F

Could b nutr burn check the ppm and the ph please respond

Drooping could be caused by a number of things. Overwatering is probably one of the most common. If you think you're good there, make sure you aren't underwatering it. I had that problem and my girl was way underwatered. Best of luck.

The temperature of the room is about 75(f) degrees, and never goes over 80. Ph is kept at 5.5-5.7, and i am unaware of the parts per million

Not trying to b mean but u are running a hydro set-up without a ppm meter? How do u know when to adjust? They cost 120-250 bucks but Hella worth it!