https://www.backyardchickens.com/a/hatching-eggs-101 What If the Power Goes Off? To understand more about embryo viability & temperatures Please refer to the following links…. Brinsea ~ Temperature Guide Temperature Chart pdf BYC What to do if the power goes out! Some other ideas to help maintain heat in your incubator and great when you turn by hand is by adding some sterilized rocks, or even several sealed jars with warm water or small ziplock baggies with warm water to fill the empty incubator spaces. A full incubator of eggs always helps maintain a steady temperature even if it’s not good for your chicken math! CHAD has to be over 6 foot! My oldest, Talyn is 6' 1 and Chad seems to be much taller! HA! awesome!!! go call duckies!!