I currently have 6 chicks (three 1-wk olds and three 2-wk olds) all doing great. They are in a 55 gallon fish tank (in the house) with a brinsea heater. I would like to move them to my 4'x5' wooden brooder box soon to give them more room. The bigger brooder is in my shed which protects from elements but is not insulated or anything. The temps in upstate NY are crazy this time of year- today it will be 81 but the next several days will be in the 50s, nighttime temps in the low 40s. Do you think it will be ok to move them out there with only the brinsea? I really don't want to start messing with heat lamps :/ What do you guys think?