trying to figure this one out. Looked online, but havent found an answer. Using Coco with botanicare lineup, currently have thrips, and this just popped up. Could it be from thrips larvae in the root system? I've treated the foliage with pyrethrum already, twice. I have yet to treat the soil however, and i know spinosad or azamax is supposed to work. ive flushed twice now. appreciate all help thanks!