The air cell is in the fat end of the egg
So you want to candle straight down through the fat end.
You might want to give this a read to help you for when you next do more incubating: https://www.backyardchickens.com/articles/the-beginners-guide-to-incubation.73350/
So you want to candle straight down through the fat end.You might want to give this a read to help you for when you next do more incubating: https://www.backyardchickens.com/articles/the-beginners-guide-to-incubation.73350/
Running dry is all we can try to help fix that. Are you sure your hygrometer is accurate? Because 68% totally empty is not something I would expect.
