I have 30 one-week old chicks outside in a wood 12 x 8 shed in a 3 x 4 brood box with two 175 watt heat lamps and I'm going to buy another one today for night time. The temp outside is ranging from 90's during the day (which is fine I can ajust the heat bulbs) to 60's at night which is a problem. This is the first and last time that I start chicks outside like this. It's been horrible keeping the temp up at night. At night I am hanging the bulbs 12 inches from the floor of the brooder box which is covered with 2" of pine shavings and covering a corner of the box with plywood. The temp at night at the lowest dropped to 78 degrees. Horrible. (I have a temp gauge that records the highest and lowest temp on the floor of the brooder and an old school thermometer too). The chicks are good at positioning themselves where they are comfortable. But I'm worried that they are too cold at night. I haven't lost any thank God. Maybe if I grouped two heat bulbs hanging them right next to each other and created a very hot area (too hot at first) but then it would be just right at night? My other idea is to put in a heating pad covered tightly with a towel that they could cuddle into. Also I could cover more of the brooder at night, but when I go to bed, the brooder temp is a toasty 95 degrees. Any other ideas out there? Has anyone ever used a heat pad with chicks?