After a week getting worse.

maybe its just me being new and stupid again. But i think the dosage for CalMag is assuming that you arent using RO water. Maybe try doubling the dose of CalMag. IMO it is a good idea to spray before the lights go out. Those tiny drops of water will act like little magnifying glasses on your leaves if the light is on. I noticed seeing leaves in your one picture that looked like where a leaf had been crossed over one another that the problem didnt seem so bad on the under foliage.
 
Ya. Temp isn't a problem. Even in summer. If it climbs it's hooked to a massive ac unit. I can put it down to 11 before temps get 90+
it's not the temp.. it could be winter but put a magnifying glass to the light and it could burn you
 
None Taken. You can get light bleaching with normal temps and high intensity lighting.
yeah big time I have some light bleaching going on now but it's only the dead center of my plant and the rest looks great..so I'm sacrificing a lil bleaching to reduce stretching
 

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