I'm with these guys! It looks like you got spider mites. Get some neem oil concetrate (as pure as you can), dilute it accordingly, and spray your plants every 3 days. Neem oil makes the bugs unable to reproduce, so you need to spray in coordination to their life cycle, which will cause the problem to stop. Keep the treatment going for like 2 weeks until your leaves have a shiny and waxy coating on them.