My seeds have germinated. (But not all)

Here you can see the inline vent fan.

I added a little electric heater to keep things a little warmer for the nightshades. The little orange thing in the picture is the thermostat. It turns the vent fan on at 78 and off at 70.

This shows the temperature at ground level.

After 19 days the soil temp at 4 inches is 95 degrees.

 As you can see I have had good germination. The chard, scallions, pimiento peppers, tomatoes, and egg plant have done the best. I am running the air temp close to 80 which is causing, so far a failure with the leeks and Cole family plants.  The bed soil temps have run much warmer than I expected. Next year I think I will start about February 15th. That would allow me to run the bed at cooler temps closer to 70. Then later on I could bump things up to 80, or have a separate bed for the night shade heat loving plants. The outdoor soil temperature is 31 and next week we should get a night of 18 . I am still covering it at night with a blanket and it looks like the night temp inside drops to about 65. So far purchased tomato seeds have not sprouted, but the ones I have saved have done great.