sorry im a noob at incubating but does the incubator need to be on 24 hours? what if the light bulb spark and burns the house or becomes too hot for the egg? is it ok if the egg is hot. does the water inside an incubator have same temp as the egg? i dont have a room thermometer so i cant tell the temp of the incubator but the egg is hot is that normal? how do i control the temperature inside an incubator?