Well my ten Buff orp chicks are three weeks old today and was wondering how long I have to keep the light on them? Also how long do you have to check them for pasty butt? I haven't had one of the ten that had any pasty butt as of yet, so I didn't think I'd need to be checking them very often. Also I have my brooder in the livning room, and I keep the house around 68-70 degrees. They have most of their feathers except on their bellies. I figured in the next week or so I could stop using the light.