Troubleshooting form would be helpful.

If you think it's a fungal thing, you want to increase your airflow, lower your humidity, and apply some Serenade/sulfur/neem/ other fungicide ( I know Safer makes one that's easy to get, but I can't remember what it's called. 3 in 1, maybe?)

But the leaf macros- I dunno, that almost looks like a pest issue. I've seen large #'s of whitefly crawlers produce similar damage. Or more precisely, I've seen damage that looks a lot like that when I've tossed a whole lot of chems at whitefly- might be the crawlers, might be the chems. Didn't leave a control to figure out which.