In the incubator?I believe I had eggs pointy end up in egg carton for the fist 18 days.
Yes ,fat end up, but carton not always a great idea, can restrict heat and airflow.
Did you turn them?
There's a lot of little details that can adversely affect incubation.
Here's some good reading about incubation/hatching.
https://www.backyardchickens.com/ar...incubator-thermometers-and-hygrometers.73634/
https://www.backyardchickens.com/articles/the-beginners-guide-to-incubation.73350/
https://www.backyardchickens.com/articles/incubation-humidity.73386/
https://www.backyardchickens.com/articles/guide-to-assisted-hatching-for-all-poultry.72886/
https://www.backyardchickens.com/th...gs-no-problem.1046313/page-5385#post-16540512
