Help with plants.. newbie grower.

This is my first grow so I am just looking for some comments about how my plants look?
I have 3 plants they are 6 weeks old just started flowering them. Humidity is 60 room temp is about 70. They are in Schultz Potting soul, mixed perlite into the soil and nuts are schultz 10-15-10. I don't know what strain they are. They are under 60 watts each, full spectrum, florescent lights.

I burnt the tops of 2 of my plants (as you can see) the other day as they grew into the light
I also see some spotting on the leaves... could this be from being to close to the light? I think I have seen it on other plant pics before but I can't remember what they said it was. Does it look like I will be able to sex them soon? Any advise or comments would be helpful thanks!

im not sure what the spots are but the leaves are curled and that could be a sign of overwatering.

in the second pic, is that water being sprayed on during the light cycle? That could be bad i think because the water acts like a magnifying glass and could burn spots into leaves.

also, because someone is always bound to ask, is your soil already ph'd and do you know the ph of your water?

I don't know the ph of the water or the soil. Yes it is water on the plants but I sprayed them just before I was turning lights off. I don't think they are over watered as I am very careful with watering and wait for them to be pretty well dried out before watering again.

I'm sure i've seen those little Spots before on other grows here on RIU and they were i think "spider Mites". you will have to have a very close look under the leaves to see if there's any eggs or spiders. I do Hope it's not though. Good Luck