The fine print of the instructions of the Brinsea EcoGlow brooders says not to use the unit in a room where the nighttime temp drops below 50F (10C). Is this really mandatory? Has anyone here broken this "rule?" What was the result? And, more specifically, has anyone used a Brinsea EcoGlow in an outdoor brooder (or inside an unheated outbuilding such as a barn or shed) in winter? What happened? If baby chicks can survive being outdoors in winter with a broody, wouldn't the EcoGlow, which is designed to basically be an electric hen, suffice? Thanks for any help!