I had never incubated anything. Today is day 27 for my guinea eggs and so far I have a total of 19 healthy hatchlings. There are 9 eggs left. How long after 28 days do you leave the un-hatched ones in the incubator? Is there a cut off, as in, if they haven't hatched by day ___ do you dispose of the unhatched ones? It's very exciting isn't it? I'm mentally exhausted.