Yellow spots on leaves

[Django_TO]

Ho guys. So i thought that the issue was a calcium def. I added calmag on the feed yesterday. Today the issue seems worse. They are on day 80 today and one of them will be partially harvested (more mature buds) soon. Tomorrow even, maybe. The other one seems to need more time. The issue appears more on the leaves near the bigger buds. If any one can help...
Thank you

 

[namvet25]

It looks more like insect damage.Check plants for bugs.

 

[Django_TO]

It looks more like insect damage.Check plants for bugs.

That was my guess also. Even with the microscope, can't find anything on either side of the leaves. Today there was no new "damage".