@DeaneR Hi Deane Plants are looking good at first when you said the chlorophyll had been removed I immediately thought spider mites as thats their modus operandi however your pics don't really look like mites but rather leafhoppers could be the culprit. Regardless I will post you a link to a handy page to help you identify the problem Hope I was able to provide an answer to this question And Good luck https://www.growweedeasy.com/bugs-pests-symptoms-marijuana-grow
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&uact=8&ved=2ahUKEwih4NHb8NjjAhUm63MBHThVBxAQFjAEegQIABAB&url=https%3A%2F%2Fwww.ilovegrowingmarijuana.com%2Fidentify-marijuana-plant-problems%2F&usg=AOvVaw1XAGsH0TGTfK_2CYFcNxZH