What's up with my plant?

So this is a CBD Critical Mass 6 weeks into flower she's in compost organic soil and added P&K and a few other things andcompost teas every other watering or so, is this light burn, bleaching, or lack of some kinda nutes? I have two others in coco coir and they don't have any of the issues the one in soil has. She's under a 1000w hps in a 5x5x7 tent in a air cooled reflector and a 440cfm inline fan.

I'm pretty sure this might be a potassium deficiency, and almost positive it's a potassium deficiency if you have low humidity. Check the link below.

https://www.icmag.com/ic/showthread.php?t=11688&page=1&pp=15

Heat? Ph? Or burn? Check all 3