I've made my first homemade incubator and had my temp close to right before I added a fan. The temp did go from 99.6 to 100.8 now it goes from 97 to 102 since I added my fan. Help please! I've used a small cabinet lined with foiled insulation, I have a new water heater thermostat on the wall below the egg rack. On the floor I have 2 75 watt bulbs and bow my fan on the opposite wall from the thermostat, so the fan blows over the bulbs at the thermostat. What can I do?