I have a large box fan set on high. The plants get a little wind beat and I havent had PM or Botrytis in several years. The gnats..... these fkrs here will crawl in and up the container holding on for life till they get on the soil. Yes, its rough flying, but they have nothing but time. Ive found that Pantyhose over the bottom holes and bottom watering is the best way ive tried. Spraying H202 solution on the topsoil once a week( thanks to
@Budzbuddha for that tip) seems to keep them from doing much damage. Im going to pay up and buy some Gnatrol.