I haven't used an incubator in years prefering broody hens. In the last few months I've lost two hens to a hawk and the neighbor's dog; both hens having clutches of eggs. Since the average clutch size for my serama is 6/7 eggs I decided to buy the incubator shown in my post title. I'm testing it now and it keeps a very constant temperature. Has anyone else tried this product and, if so, how did it do??