Blue Cheese In Distress!!!

hello Everyone,

My blue cheese plant is 11 days old in a bubbleponic system under a 400w mh and 4 5500k 150w cfls. for some reason, only my blue cheese is looking weird. the first true leaves have brownish spots all over it, able to be seen from the underside. It this some kind of disease that can be shared ith the other plants, or just heat burn/something I did?

Here are pics
 

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