BURNING? or something else

I just started growing a few Master Kush X SkunK#1 cross

this is my first grow and its been about 3 weeks, plants are kind of slow at growth but not too concerned since time is not an issue.

however there are these yellow spots on a couple of the leaves and was wondering if they were either burning or if i am missing some certain nutients? couple of the leaves seem to be curling

i have them on a 24/7 light system right now

Ive attached a pictures of my grow room, and pictures of the plants


Please let me know asap, what is going on

sorry about the bad quality of the pics

thanks again
 

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I am using a 105 watt CFL cool white at the moment

wondering if thats wat the cause is or is it just too close to the plants?
 
First of all your plants look way to stretched out.. You need to increase light level and get the lamp already there closer.. Max temp at plant below 30°C.. As long as no hotter your lamps can get closer...
Also the spots on your plants look like minor burn.. How many nutes do you give.. Got an EC VALUE? It should be really low like 1.0 or so..
 
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