It is the actual surface temperature. I'm trying to brood outside. The nights get into the 40s but the surface temp of the pad is 85 during the day and 81 at night. I plan on raising just 3 chicks to add to my flock.
Has anyone tried to raise one week old chickens with this?https://www.amazon.com/dp/B00JHK375E/?tag=backy-20 Is it warm enough? Mine gets up to 85 so I'm not sure its enough.