It comes with a black plastic tray inside, with metal rails that you can put in to fit different sized eggs...so you could have a row of large eggs sectioned off from another row of quail eggs, for example. If you use the tray, your top layer of eggs will have to lay sideways. I learned about double stacking them, and then when you cull on day 10, they should all fit in the bottom. My problem (a good problem to have, I might add)...is that I have only culled one so far. Tomorrow is Day 10, so I may be culling a few more. I have 31/32 growing at the moment!
The issue now will be hatching...I will have to open it more often to get the chicks out as I didn't think about the fact that extra space would be nice for them during hatch day. So I think I will put it in my dd's bathroom and only open it when the shower is on and steamy to prevent shrink wrapping. I'm extra worried about the humidity because we are in the desert.
Did you get the turner? Apparently it is a cradle turner on the outside, rather than something turning the eggs inside. I didn't get it...but it has been easy turning the whole thing rather than individual eggs.
There is no way you could get 50 in. 40 MAYBE if you have some smaller eggs in there. But then there is not much room for hatching. From now on I will stick to smaller numbers, but chicken math got the best of me. That...and I figured I wouldn't have a good hatch rate with 2/3 of them shipped and it's my first hatch ever. Boy was my chicken math WAY off and now I am scrambling to get a bigger brooder set up!!!