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.
metik2009 Reviewed by metik2009 on . Leaf Spotting: Your Diagnosis? Any diagnosis on this spotting on the leaf? There are about 4 of these leaves on one plant, mid-plant. Here's the link to the high resolution pic: FileDen.com | Free file hosting and online storage The grow details are below. TIA for any ideas! ~jessie Rating: 5