Shirley,
How long did you heat your soil in the microwave. I tried that and still have fungus gnats flying around. Just started a few seeds that had sprouted in the fridge--I'm holding off on most of my planting till February mostly because of the fungus gnat issue. I lost lots of seedlings last year. They germinate and come up great, look good for quite a while, then start dying as their roots are chewed off by the gnat larvae. I have tried lots of suggestions: cinnamon, keeping the medium dry, a layer of perlite on top of the soilless mix, etc. Getting a little frustrated. I still had plenty of seedlings to plant, but some crosses did very poorly. Maybe that's another way to weed out the weak ones :~(
