I agreed to try hatching some chicks for a friend as a practice run before buying myself expensive eggs. I intended to use a Brinsea Advance 20 Octagon on an auto-turn cradle with the humidity chamber accessory. It is a fairly idiot-proof set-it and forget-it arrangement. The friend gave me FORTY-TWO eggs. As only 24+ fit in the Brinsea, I put the excess in a standard styrofoam Hovabator (originally intended for a separate hatching chamber), but do not expect to get as successful of a hatch given my difficulty in maintaining the humidity in that one. I have upped the humidity and taken the Brinsea off the turning cradle in anticipation of the hatch. Here is my quandry. Everyone on here has cautioned against opening the incubator too often. I am going to assume that it has to do with the resultant drop in temperature and humidity. However, the Brinsea is packed end to end with eggs. There simply is not any room for newly hatched chicks to wander about and very little clearance above the eggs. My preference is to remove each chick as they hatch and discard the shell, leaving additional room for the subsequent chicks to hatch...but that means frequent opening of the incubator. My hope is that this is a negligible concern with the Brinsea given that the heating element and humidity chamber immediately begin to compensate once I close it back up. It takes only few minutes for the system to return to the set parameters. In the future, I would only hatch a dozen eggs at a time, allowing for more space in the Brinsea or for the Hovabator to be employed as a separate hatching chamber (assuming I can figure out how to raise and maintain the humidity effectively). The question: Is opening the Brinsea frequently to transfer the chicks and remove shells after each hatch the lesser of two evils? Thanks in advance for any help.