How do I fix these yellow SPOTS (4 weeks from seed, in vegetative now, Pics Included)

How do I fix these blunt yellow spots, what do these look like to you? And possible solutions?
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They are under 400 watt HPS.
About 13 Inches Away.
I use Fox Farm Big Bloom for nutrients.

What strain is it ? It looks real happy ! Good job! What It looks like to me is variation and what that's all about is that spot on the leaf is lacking the chlorophyll that would normally be there . Its really cool and later on can actually be quite pretty and its also pretty uncommon. It doesn't happen too often in cannabis but when it does it doesn't harm anything and its picture worthy. I can see more of it starting further down some of the other leaves. Awesome.

It is TGA Subcool the flav, I've played it music and kept it in perfect conditions, hope its happy :} I was thinking those yelllow spots were from nutes maybe, i dont know how to fix that chlorophyll problem

You cant fix it. its all ok unless the yellow spots are paper like or sunken in which they dot appear to be.

I'd say those spots came from you dripping a few drops of nutes on the leaves while watering because your plants look healthy otherwise.

dallygap said:

How do I fix these blunt yellow spots, what do these look like to you? And possible solutions?
_________________________
They are under 400 watt HPS.
About 13 Inches Away.
I use Fox Farm Big Bloom for nutrients.

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Don't look like toxicity or defeciency to me , just some concentrated liquid that fell on them ! Don't flush with concentrated nutrients or insecticides !!