What is it?

Sometimes rust spots nvr heal…mostly look at new growth for nutrient correction

Hi guys! Thank you very much for your replies. I added a new question with photos. I tried to zoom in on the photos, but I have a poor magnifying glass. I don't know if you will see anything there, but maybe those brown or white dots are some bugs after all. Thank you for your help!

It looks like when my plant got spider mites, I did not notice till way later and webs started forming. If you checked though its probably not that. They are crazy small though, I find its easier to spot their eggs and egg shells vs themselves. Other option I could think of is maybe a root disturbance? has the PH been fluctuation a lot? or has the root zone been disturbed or over watered? I agree with others that it does kinda look like TMV but not 100% If it was TMV you'd want to find the source as it also infects a lot of common vegetable plants and their soil beds. You will need to "nuke" your grow room should it turn out to be TMV. Shit can live on dry things for 2 years or 2 months in wet soil Best of luck

I see it mainly in the last pic of the whole plant on the left side of the picture on that large leaf farthest right. That appears to be somewhat like TMV. Give it a few days and see how it develops I suppose

Some of that does look a bit like TMV.. but other parts do not.

I also checked the leaves and found no bugs on them. The plant is still growing, not stagnant, but the leaves are looking worse and worse.