I have some sort of root infestation. Either Root Aphids, or Fungus Gnats. About day 30 of flower. I have been putting GoGnats in the res and it has seemed to slow them down. I got my hands on some pesticide containing Malathion. Think its about 50%. Was wondering if anybody has used this for a root problem. It is supposed to be mixed in a spray. I dont think that will work. I would like to either add it to the res for a day or 2. Or mix up 4 gallons and dunk the roots in it. Any suggestions?