Yep...the humidity will be too high and it will definitely compromise your remaining eggs. I use the 48 quart rubbermaid cooler for my hatcher. Set up like an incubator with thermostat/light, etc. but there is still plenty of room for hatching. I can easily fit 48 eggs into it with a small spot in the center for the hatching chicks...however, I do take my chicks out 2 at a time after they mostly dry. I have a side door on my bator/hatcher and I reach in and take them out using that door with very little loss of humidity or temp. I don't like my chicks walking all over the unhatched, pipped or zipped eggs. JMO.