Am new so don't know anything about you or your history with this site, but I do have a grow question that perhaps you or anyone for that matter can help me with. It would be much appreciated. One strain that i have has black splotches on the underside of some of the leaves. It does not seem to be affecting other strains in my flower room. They almost look like thrip damage but are very dark. Does anyone know what the heck this is?