Turk, I have a brinsea 190. I can hatch all season long and use one incubator. The key is keeping the hatches straight. I use reusable mesh vegetable bags for each hatch. And a big calender to keep it all straight. I have around 90 eggs in it at varying stages throughout. When they are ready to go to lockdown, they go in a bag and hatch inside seperated by brood pens. The brinsea is the best I have used and is very reliable too. My two cents.