Started this at the same time as the rest…grow room got left open one ight and a big yellow grass hopper(Texas) ate this down to almost nothing…it survived and grew like this every since.
Looks like some kind of bug damage to me. Clip a leaf off, turn it over and look at it with a magnifier or microscope
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I had the same thought, probably some sort of bug activity.
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Welcome to the community , Looking at the first couple pictures. My first thoughts is PH Not in the sweet spot range. Follow up and check PH run off. 
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