first time grower, need a answer :)

Hey guys!!

I'm on my first grow , the stage I'm at Is...

I've germed my seeds, they've broken through the soil and they have their; first rounded leaves
their first pair of jaggerd leaves
they are begining to grow the second pair of jaggerd leaves.

I'm using a 400w hps and a 7inch fan trying to keep it basic and cheap for first grow, I'm growing 4 x lemon skunk.

PROBLEM!
I've spotted a very small amount of white stain on the tip of the first set of jaggerd leaves on one of couple the plants. Any ideas on what this could be? I want to catch it before its a problem.

Hear from you soon dudes.
('''\,(o.0)_/''') rawr

Pics please..

Not possible. No cam. Any ideas what it might be?

Can't help without pics. I won't worry about it though. As long as you are just giving it water,not overwatering it and plenty of light, it will be fine

Cheers man I hope it ok... if it gets worse ill post a pic.