I made the mistake ( i say mistake but it might not be) of putting the all in separate containers with lids and then set the thermometer on top of them. But once day 55 came I transferred them all into one container so that after I cut them it was a larger container then the size of the egg and they have room to crawl out of the egg, if that makes any sense. And to answer your question it was just inside the incubator not the tubs.