@Jellypowered I don’t have a camera capable of taking a close macro shot. Under the 60x zoom on the microscope it just looks like some dust or something.
And hey that’s absolutely fine, Honestly if you take a camera shot of the leaf and zoom in you can see what you need to see with just the blown up version. Just make sure the dots don’t multiply.
If you look here 3 types of mold you’ll see a couple different shots. I have no reason to believe based on your pictures you’ve shared it is mold.
The white dots i’m referring to could be eggs. Examples
But it could be literally anything. You could have dropped water on that leaf causing light burn, there could have been a foliar spray that dried, I’m just strongly suggesting to keep an eye on it lol. (speaking only about the rust spots and white dots I circled)
Temps are between 72-77. Humidity around 50-60%. Under the microscope it just looks like a white ball maybe. Not especially fibrous or threadlike. I’ll keep an eye on it.
I would start with pH down to 6.0. If you are dumping salts on your soil, the ability to buffer the pH suffers.
I would also look for mites. Grab a white piece of paper and put it under a branch, then shake the shit out of the branch and see what shakes out. Look under the afflicted leaves carefully for anything moving around. If you are seeing “bits of soil” on the leaves, it may be bug feces. Only thing grosser than mites in my bud, is mite shit in my bud.