I am new to raising chickens and my three week old chicks are growing so fast! Can I put them in the garage or is it too cold? Right now the chicks are in a 50 gallon tote in the house but I can make a bigger brooder in the garage. The garage is insulated but not heated. I have room heaters I can use and the brooder lamp. The nights where I live are still in the high 30’s/low 40’s. I am also concerned with the cold concrete floor. Maybe I can use flattened cardboard as a floor? Any advice, anyone?