Hi all! I am getting 4 new chicks in April and this year I bought the EcoGlow 20. I plan on keeping them in a plastic tub in the garage for the first few weeks, to keep an eye on them. After that they will move outside to the brooder coop we are building. From what I understand reading through the forums (though can't find anywhere on their site), the EcoGlow doesn't work with temperatures below 50. If I put them outside in their enclosed coop with the EcoGlow and they are maybe 3-4 weeks old, and it gets down to 40 at night, will they not be warm enough under the EcoGlow?