Thanks. I think I'm going to add a 1/2 hr a day. I think keeping them up til 8 would be ok.. it's colder here than where you are so I think the extra sleep will help they stay warm. I'm not too worried about the egg supply. Right now we're at 8 eggs a day out of 12 girls so even if a few others stop laying I won't be worried. I just don't want everyone to stop laying.