Detailed incubation records

I’ve incubated at 37.5 Celsius and 50% humidity adding 100 ml water every other day until lockdown on day 17 then I set humidity at 75% until they hatch.
What's your hatch rate? Personally, I think 75% RH during hatching is too high, would be good for ducks and geese but gamebirds don't fair well with humidity that high but whatever works for you then use it.
High humidity can cause the chicks to become 'stuck', which is different from being 'shrink wrapped'. Too much moisture will not permit the chick to turn properly in the shell....a stuck chick. Can also cause other leg deformities and possibly cause drowning of the chick if the moisture is sufficient to collect on the inside of the incubator, and drip down on the pip opening.
 
I’ve incubated at 37.5 Celsius and 50% humidity adding 100 ml water every other day until lockdown on day 17 then I set humidity at 75% until they hatch.
Do you end up with a lot of problem chicks?
Dead in shell eggs?
 
An after thought here...high humidity during incubation and at hatching can cause 'mushy chicks'. They will have a 'pot bellied' appearance and also a 'failure to thrive' syndrome.
I got one of these yesterday. Huge belly, swollen head and neck, one curled foot, one crooked leg. :hit
 

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