I have had soooo much trouble with wide swings in the temp of my bator...from as low as 97 to as high as 103...this is the water weasel temp. It's only for 3-5 minutes at a time, but I fear that over the next 19 days it will add up to a big problem.
I've tried adding more ventilation holes, adding a jar of warm water as a heat sink, etc. I've adjusted the thermostat about 100 times.
I think I'm going to take out the thermostat and put the light bulb on a dimmer so that it stays on all the time. This will also help the humidity be more stable. Any other suggestions??? I have 6 silkie eggs in there.