Smeagsanswered grow question 4 years ago I def have fungus gnats. Watering way too much. Going to bottom feed for a bit before a flush to kill off the gnats. Could they be chewing roots causing the spotting? The underside of the leaves are all clean. I cant find anything that resembles a thrip or any poop from thrips. I have two other plants in this tent all affected by the gnats but only the dark devil has spotting.