I have/had the same issue on my Double Grape & Skywalker from Mephisto. I made some Banana Tea. So far the dots have cleared up. Phosphorus and Potassium seemed to be the deficiency. Just throw a banana peel in a mason jar filled with water, leave some room for gas. Let that sit for 12 to 24 hours. Introduce just like you would a concentrated nutrient. Start with around 1/4 cup per gallon, and you can work your way up to 3/4 cup per gallon once it starts to heavily flower. Autos are a different animal when it comes to nutes I'm finding out. I hope this helps. ✌️🌱