Athosanswered grow question 6 years ago If you pass your finger, what do they do? do they seem to jump all over? If they do then you have springtails. I've had them in my last two runs and the plants did fine. They feed on fungus and other bugs and are not dangerous to the plant. It could be isopods too, that feed on decaying matter. The springtail bugs, thrive on moist conditions, if it is that bug that you have, then you are probably over watering a little bit.