First Grow! Cataract Kush, Burnt tips.

Hey guys,
I recently started my first grow.
After Much trial and error i have one thriving baby. I feel as first timer I am over parenting in a way but who knows.

So down to the nitty gritty, my plant is around 2 weeks old.
I have it under 2 10w 50/50 daylight/bluelight cfl's, 1 regular 10w cfl kept 6 inches from plant and 1 160w Sun Simulating Mercury Vapour hung 35 inches from plant.
The closet is lined with tin foil(may remove and line with white paper), but the temperature is around 27 C at all times.

Before I corrected the heating situation I had set my MV lamp way to close to the baby but was closely watching it to make sure the heat didn't kill it.
It suffered from a few tiny burn spots and browned curled tips on a couple of the leaves.
The burns were recent and the plant is still growing strong im just worried.

With that being said I cant seem to determine the problem, wether it is over watering or heat stress.
I have been stupid with my waterings, I may have been watering to much?
I understand its a way vague post but I will post pictures tomorrow morning and give a little more detail on my situation.

Any general tips on my lights?
thanks

What do you mean you have stupid with waterings? How often have you been watering? Do you have proper drainage? Are you feeding nutes? How strong? Is your pH good? We need more info. And pics are always a plus.

I dont recomend feeding them at this stage, becouse there is enough nuts in soil for atleast 2-3 weeks( i would feed them only if i had soil with no nuts in it) . And i hope u ph-ed your water asap. Get some more ventiation too.

Thanks!
I actually leave those cupboard doors open during the day so there is a lot of vent.
Im going to run out and grab a pH meter today

You don't think the little burns are anything to really worry about? As long as I correct the pH and hold off on nutes for another week or so?

I like your thermometer/humidity gauge. Where did you acquire that?

hahahahahaaha, ya its fairly ghetto.
We have a bunch of reptiles, had an extra meter kickin' around.

If you were being serious, any pet store.

Thanks a bunch!
I watered them yesterday about 250ml's. Im going to wait about 3 or 4 days before I water them again.
Two fridays from now ill give them a little nute.

The light was just a sub for cost. Im a poor student ahaha.

cheers!