I posted this on another thread but thought I might get good answers here since I am in PA. We have 9 almost six week old chicks still in the house. We've set up a larger pen in the unheated garage with a heatlamp, but my husband thinks it is still too cold for them. He wants to add another heat lamp or a space heater. I think that might be too warm. They are fully feathered. What do you think?