Total newbie. Got 2 chicks today, not even sure how old they are, but days, I guess. It's going to get cold over night by this weekend so I have them in a spare, but unheated room. Right now, it's around 60 in the room and only around 82 under the light. The setup is a plastic bin with the lid on sideways so there is an opening at the end with the light clipped on. The floor is cement so I put the bin on a pillow - that raised the temp a few degrees. I turned on all the lights in the room. My questions are whether they are okay for now at that temp - they are moving all around and seem fine, and what should I do in a few nights when it gets super cold? Any secrets to making it warmer in the bin?