When I had my chicks during the winter months, even here in Florida the nights can be chilly. I mostly used the 60 watt incandesant bulb and I clamped it over my brooder as mine has a clamp. I only used the heat lamp when frost or a freeze was forcasted, and I made a bracket that was over a foot from the top of the brooder for the heat lamp. The brooder was in the barn. This picture of a lamp is similar only w/o a clamp.