When I clone in my humidome I give them 1/4 strength nutes right off the bat, helps keep em green. When clones are cut they're use to the nute regime from the parent plant so a small amount of nutes wont generally bother them. I've seen clones like that before many of times until I started...
Diagnosing plant issues has never been easy for me but I find this chart very helpful.
Also you may be better off to repost your question in the plant problems thread.
To me it's a pH related problem.
https://www.rollitup.org/marijuana-plant-problems/
Check the undersides of your leaves closely they could be spider mites. If so there is a ton of info on how to get rid of them or at least keep them at bay. Just do a search on spider mites.
The way I came across this information was in an article from skunk magazine. I don't have a link to the original article but I copied the article for future reference.
I just started this light schedule as an experiment and I'm only in the veg stage right now and I will not start the...