Humidity Issues

[Poultrykeeper12]

Hello Byc! I am incubating chicken eggs, its day 10 and they seem to be doing fairly well, However My humidity is acting odd. It keeps going to 50 and then a couple hours later, it goes down to 40 again! Then it just reverses every couple of hours every day. I read that if the humidity keeps going down and up the batch is ruined. Is this true?
This is a picture of what's reading my humidity at the moment.

 

[Rooster G]

I have a hard time trusting hygrometers, and humidity fluctuation in that range will not have an ill affect on the developing embryos. That is a great range. Your batch is just fine.

 

[Poultrykeeper12]

I have a hard time trusting hygrometers, and humidity fluctuation in that range will not have an ill affect on the developing embryos. That is a great range. Your batch is just fine.

Thank you!