I have a reptipro 6000 and the temperature fluctuates 1-3 degrees. I am incubating at 86, but during the night it will drop down to about 85 or 84. Is there any way I can stabilize the temperature? How much will that kind of fluctuation affect the eggs? I have bottles of water in the incubator and I have recently taped pieces of styrofoam in it to hopefully keep the temperature constant too.