Black Domina Clone getting spots, please help me out. This is a special project plant and I really need help fixing her.

This clone is not in flowering. It's still in vegetation. I'm strongly leaning towards Cal-mag deficiency. I'll start here, maybe I just have gave enough which I am very guilty of doing to many of my plants. I've just never seen perfect circle spots like this before. I really thought it was Red rust spot until I confirmed it wasn't. Not spores, nothing comes off, doesn't spread to other plants ( been with other plants for weeks)

If you’ve been trying to figure out what rust spots on leaves during flowering indicate, you’ve probably come across a number of wildly different explanations. That’s because these spots can have a few different causes. But two of them are by far the most common, so we will cover those here. Generally, rust-colored spots on marijuana leaves indicate a fungal infection or a deficiency in magnesium or calcium. Nutrient burn is also a possible culprit. Let’s see how you can figure out which issue your plants are having and what you need to do to fix it. Rub the spots—- do spores come off on your fingers??? Fungus—- no??? Then add cal mag. Good luck! ✌️🏻💚🌿💨

By seeing the global colors of the leaves, globally really dark, plus some burned tips... Could it be too much feeding / nutrients burn?