Brown spots, nute burn or pests?

hey there spiderdijon, yeah you've been doing a great job doing the misting, it's a great technique! thing is the little water dropplets will sort of collect on the leafs and if they dont evaporate quick enough, they'll make a "magnifier effect" and create a loupe combined with the light that will actually burn the leafs and create little markings like what you're seeing now. It's no major but just make sure the leafs are dry ish otherwise this can happen. hope this helps ! 🚀