I noticed this on my plants after I sprayed them with water today. I can't tell if its mildew/mold or is it just spots from where the water dried up, it's not on all the leaves. The plant is just a couple days into flowering.
I'm pretty sure that's just what happened when the water dried out. I had the same thing happen to me, and i started freaking out thinking it was mold, but it just went away. If it starts spreading, that's when you should start worrying
