Dry Hatch Humidity

I have a little giant still air incubator and I fill up the two smallest water slots and it has held steady between 28-35 % humidity. At lock down I am going to try to keep it at 55%.
 
I am using 2 hygrometers in my bator now. I dry hatch..in fact just finished one yesterday. I followed the guidelines Rebelcowboysnb suggested and it worked great. I wanted to use to hygros in case one stopped working and it gives me something to compare. At Walmart they run average 5.00 and up. I tried adding a fan to my LG and never could get it to stay regulated....so dry hatch worked wonderfully..have 15 little fuzzy buns peeping at me!
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A university study showed that increased turn rate can compensate for less than optimal humidity. If you have an autoturner set to every half hour. Also I would not advise using the no humidity method as I have found at time I accidently ran out of water in the incubator the air bubbles were way too large as the egg itself was evaporating to much watern just my own observation.
 
Success with dry hatching depends a lot on the atmospheric humidity in your region. If you live in a very dry place, your eggs might lose too much moisture. I'd reckon 16% in the bator is way too low. The times that my humidity has been lower than 30% through the whole 18 days, I've found that my eggs lost too much moisture and had very big aircells, and I had a poor hatch. I'd agree with the advice to calibrate your hygrometer and aim for at least 25% humidity in there. Good luck!!!
 
I noticed when I read the directions on one of the salt tests that it says not to use iodized salt.
Does iodine affect the accuracy of the test?
 

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