North-central Arkansas: Low 50's yesterday; low 40's today. We received 2 eggs from 3 pullets (10 months old) both days. I have a heated box (with 40-watt bulb) under the waterer inside the coop, as well as a 40-watt lamp on a timer, which provides light from 4 a.m. until 8 a.m., then again at 4 p.m until 7 p.m. I'm wondering if a 60-watt lamp would be better.