I have one of those infrared red lights in my chicken shed with my 2 1/2 week old chicks. They are supposed to be at about 80 degrees now. During the day it has been reaching about 85 outside and it is very hot in the shed with the brooder light on. Can I leave the brooder light off during the warm parts of the day or do they always have to have it on even if it is warm out? Thanks!