is it mold?

I don't know I'm a newb dealing with some "mold" myself someone mentioned mine might be mycellium from the Mycorhizae in the soil, there is beneficial fungus ("mold?") that will coat the roots and protect them from dangerous pathogens(disease causing agents). If i had to guess, I'd guess that.. but like i've said this is my first grow, and unfortunately have a little bit with this? but i haven't cleared it yet. I don't know whats "good" or "bad" just that's my first thought hope its the good stuff, your plant looks otherwise healthy, just some info that might be helpful did you add microbes or pro mix with "mycorhizae or something" Someone with some actual experience should be around to help gl

yes this is mold