I am going to build a simple box to use as my brooder, and I have read here that the best source of heat is lights.... now my chicks will be in my garage, and this March when they arrive the temp can range from the teens at night to 60's in the day, yes good old Indiana weather. My questions is what about at night? I do not want them to have light all night do I? infrared?? Just want to be the best prepared for when my chicks arrive!!