Spots on the leaves?

Clawing on the second pic, leaves kinda look dark...hard to tell with the blurple lights. Possible nitrogen toxicity.

whatever you got, it's not a new problem. is pH okay? not overfeeding? then, add some epsom or calmag to you rmix. tough to know for sure... you need to assess what you feed your plants.. read the labels.. eliminate possiblities before adding stuff. ther's a leaf chart in my diaries... grab it.. compare to what you saw initially and how it progresed to knwo -- did it start low on plant? high on plant? all over? etc... all these things help you deduce what is wrong earlier in the process. if feeding constantly, i'd leand toward a p/k toxicitiy causing this... if udnerfeeding or lacking nutrients in your mix, you need Mg from what i can see? could be wrong. epsom salt is a cheap way to provide Mg. you need toknow the ppm of the Mg you provide to make an educated guess as to how much you should add to your mix... if no Mg exists, you can go upto 80-100ppm and be fine, assuming other element's ratios/concentrations are not causing problems.