While I have no conclusive evidence, I'm fairly sure that I can rule out soul PH and certain nutrient deficiencies with all the media in this entire grow is exactly the same. And they got the same amount of top dressings and waterings with feed closely to the same as possible with all the other pots. I try to be consistent as possible In my applications of top dressing, feeds and watering.
But that definitely doesn't rule out changes that could occur in each individual pot. I'm tending to think it is individual strain related as far as how sensitive they are to the UVA.
I think what I have planned for the UVA use in the next grow should make a difference.
I appreciate the input!