I just reworked my incubator, and one thing I did just to try it out to see how it would work and it seems to have helped is that I turned my thermostat around so the metal backing was facing out. This helped warm it up & cool off quicker so I was getting a quicker reaction to the air temperature. I also have the fan blowing over the light bulb and partially at the thermostat so it will also cool off quicker and turn the light back on.
On my last incubation I was going from around 94º to 104º (surprised I got 3 to hatch!!). Now I have been watching it this week (no eggs in it yet, supposed to be sent today!!) my temp change is from 98.4º to 101.0º. A much better fluctuation. I would guess that if I had a thermometer in a water wiggler, my fluctuation would be less.
Good luck!
Bil
On my last incubation I was going from around 94º to 104º (surprised I got 3 to hatch!!). Now I have been watching it this week (no eggs in it yet, supposed to be sent today!!) my temp change is from 98.4º to 101.0º. A much better fluctuation. I would guess that if I had a thermometer in a water wiggler, my fluctuation would be less.
Good luck!
Bil