Hello! I'm very new to raising backyard chickens. We have four chicks that are about a week old, and doing great so far. However, today we switched from a red heat lamp to the Ecogrow 20 for safety reasons. I'm worried about it keeping the girls warm, especially overnight. They are in our garage, so it's draft-free and fairly warm on it's own, but the thermometer I have under the Ecogrow shows about 85º, which makes me nervous that my girls are going to get cold. The Ecogrow is on the middle height setting, but I'm going to switch it to the lowest setting. Am I being overly worried or should they be warm enough? TIA!