I am currently using one now for my eggs. Yes it is small and I was planning to build one but time ran out. I borrowed this one and I am making it work. I have 8 eggs in mine. I went to walmart and bought a container that would work. I measured the bater and then went and measured glad tupper ware and found one to work. Don't put water in the tray just set the temp and check it. I am using hatchrite and it all seams good so far. Only thing is my temps fluctuate a bit. I have a tub of water in the bottom and my eggs sealed in a container on one shelf. If all is good I should have hatchlings soon. It is somewhere around 30 days after the shed she should lay....give or take. so if her shed was 5/4 then look for eggs somewhere around 6/4ish maybe longer but good luck!