Well we have a homeade incubator and my boyfriend just wired a hot water heater thermostat to the light (our heat source) in it. It is keeping a way better temp as far as stability goes!
I was having a problem with mine holding a temp with the house temp fluctuating as well. If I keep the air set on 70 degrees and also keep a little space heater beside my incubator that is also set on 70 that the temp will stay stable. When it's 85 degrees during the day then 37 at night it's...