Yeah they're root aphids, flying ones weren't fungal gnats.
I'm pretty sure it was in the rock wool when my bud gave me plants that were almost ready to flower... big mistake taking them.
Does anyone know if aphids have a distinct smell? When i brought the plants home, it filled the room up with a dirt/musty smell and figured it wasn't really anything to worry about. Now that i think about it, the smell was probably indicative of a root/plant issue.
A couple of days later the lower leaves started to wilt and fall off - checked for deficiencies and rechecked ph, everything was good. A few days later, some leaves that were green started to rust and get brown spots.