Got them as well. Little white suckers that run around the top after a watering. Mine do "spring" when agitated so they are springtails. Came free with my bio-bizz coco probably. They are not root aphids, and they don't seem to be doing any harm but they are tough to kill.
Bottom line, if the grow is rolling along then sterilize the room after you're done this run, clean the pots, bug bomb etc etc.
Bottom line, if the grow is rolling along then sterilize the room after you're done this run, clean the pots, bug bomb etc etc.