Heavy leaf cupping upwards

So this is my second run, learning new things, I've read this might be a couple issues and was looking for other opinions. I have read this might be a magnesium deficiency but I have also been keeping my pots pretty moist as well. I would also like to add I have been dealing with PM and had a small spider mite problem that I dealt with sprays. I have also noticed some of the lower leaves on them have been dying off. Any input would be greatly appreciated! They just started their sixth week of flower.
 

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besides that they are doing well ;D Thats my GDP and White Widow.
 

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So this is my second run, learning new things, I've read this might be a couple issues and was looking for other opinions. I have read this might be a magnesium deficiency but I have also been keeping my pots pretty moist as well. I would also like to add I have been dealing with PM and had a small spider mite problem that I dealt with sprays. I have also noticed some of the lower leaves on them have been dying off. Any input would be greatly appreciated! They just started their sixth week of flower.
What are u feeding???
 
whats the temps in your grow room ? i see the leaves curling alitte looks like abit of heat stress "i could be wrong" .as for the white spots on your leaves i couldnt really see them under that light but u did say u had a spider mite problem , dont spidermites suck the water out from under the leaves ? thus resulting in white spots? spots can also be overferts or ph probs
 
The temp is a bit low. Try keeping it between 70-80. If you still have the spider mites, they thrive in temps between 70-80 and even more above 80, so keeping the temps low will help deal with them along with the sprays.
 
you treated leaves for bugs and mildew. this could be a reaction to that, also. they've been through a lot, and sometimes the cure is almost as rough as the problem. i don't know what you used for mites, but some strains get funny. my friend had 3 moms. his partner sprayed them down with rosemary oil, and 2 did fine, while one twisted all up.
 
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