2 cents. They ARE fungus gnats. You see them in your soil. I'm betting you over water. Dry it out. And then dose with this: http://www.ebay.com/itm/Thuricide-BT-BACILLUS-THURINGIENSIS-Biological-caterpiller-worm-killer-16oz-/302000882391?hash=item4650a7c2d7:g:WiEAAOxyRhBS1wE- Good luck.