I think i caught them early because there doesnt seem to be any more spider mites, yay.

but now i seem to have the "tacoing effect" on some leaves and many new leaves are curling down like talons. and one leave has a couple brown spots. Let me provide you guys with more info so you can help me out

Im growing under 400 watt and 4 100 watt cfls for side lighting in an aeroponic system with hydroton rocks. My humidity is low at around 25% and my temps are between 75 and 80 degrees. I am using the techniflora starter kit and recently started using neem for spider mites. My reservoir is at just under 400 ppm.

I have read that the curling could be from too much Nitrogen or possibly a magnesium deficiency. What do you guys think?

Here are some photos to help you guys out.