My incubator was only turned off for a week so far this year. I would have set eggs around 40 times I guess... I didnt keep track but the majority of my hatches were all a week apart- 3 weeks at the most. I have just filled it - but still plan two more batches of eggs to go in before Dec 31. Mostly I hatched ducks- but I hatched some quail and chickens as well. Its mostly chickens in there at the moment though..the biggest setting I have put in all at once at 24 eggs.