Information about Thermostat changes for incubating Duck eggs?

i have had a lot of experience in hatching indian runner duck eggs i have hatched 26 of them. i have always done it in a homemade incubator but recently bought a thermostat plus, i have noticed it go down to 90 degrees F in 10 Min's before it heats up again. Does anyone know if this will kill them????

thanks
Information about Thermostat changes for incubating Duck eggs?
Running temps too high is more dangerous than going a little low for a small time. At 90 degrees F more than likely they just stopped developing during that time if the eggs had time to cool to that temp. Just bump it back up and they should be fine.



I listed the below website as it is a very good place to find info on incubating and keeping birds in general. Don't be afraid by it being a chicken site as a great deal of users have ducks, pea fowl, quail, pheasants, and some other types of fowl. I learned a great deal from these kind folks.



If the thermostat is fluctuating temperatures wildly it is defective and should be replaced as it will decrease hatch rates.
Information about Thermostat changes for incubating Duck eggs?
i would say yes it would kill them. take it back to the manurfactorer