My chicks are now 9 1/2 weeks old and they are now out in their coop 24 hours a day. They have been out there about a week now and I continue to turn the heat lamp on at night. And I also close them in the coop at dark. I did change from a red lamp to a ceramic heat lamp and they seem to sleep better. The temps here at night have been right around 30 degrees. Is it time to do away with the heat lamp? Or do I have to wean them off of it? If so......HOW? Thanks!