What's the problemo?

This morning I went out to feed my plants and I noticed that this one here -Chronic lights- has a bit of yellow spotting on her (hard to see but its there), I was wondering what could have caused this?
I don't believe its a deficiency. Maybe cal/mag I don't have any of that, or could it be a pH imbalance, I haven't tested it but my water is ph6.5, does it need to be higher, if I add bloom and grow nutrients?
I feed them in between waterings, could it possibly be nutrient lockout from to much nutes? None of my other plants seem to have this problem... Any help and advice is much appreciated!
+20miutes later!Okay sorry but my pic won't upload for some stupid ass reason but I'll upload later if it works...

got it!!

What are your night time temperatures where you grow these?

Between70-80 but how could that cause the spots I'm confused

You've got room for more dirt so just load them up and that should take care of any issues. Get some Cal mag in there too!

mabe I can see this morning just work up . all I see is a HOLE in the leaf and its brown around it . are you sure a bug did not eat part of it and then I just changed colors after .

mabe I cant see . I see it now yeah you have bugs eating away on it and its hungry for nutrients .

I don't see anything to indicate anything more then normal outdoor "damage" to not worry about.

I DO agree with @Bugeye, that you should fill those pots up with your soil!
That will resist any pH/micro problems and keep those roots cooler, also allowing them to grow and spread out more.

Bigger roots/Bigger buds