I have a homemade incubator which I originally had in my homes first floor closet...., big mistake, temps during the day and night in the room varied due to outside temps during the day and also temps at night when the oil-burner kicked in to warm the house. I moved into basement after a 0% first hatch attempt because of the temperature swings. It is much cooler down there(but nearly consistent at day and night), so I had to insulate the outside of the box quite a bit more. I also added a small computer fan for better air circulation. Put in 30 chicken eggs and am now on day 4 with temps holding very consistently at about 100-100.5 degrees. What a difference the location makes! Good luck w/your hatch, and I'll keep posted on how mine progresses, but I expect to see much better results this time due mainly to the incubators location!