Humidity help hatching duck eggs

[mylesmuscovys]

Hi people,

I have some khaki campbell duck eggs in my brinsea mini Eco incubator, I had an idea to put a warm damp cloth on top of the eggs to simulate the wet duck coming back from a swim. I leave the damp cloth on top of the eggs (with the lid on) for half an hour, this raises the humidity greatly. My eggs are around 9 days into development.
My questions are: is this good for the eggs?
And is this the right time in the incubation to be doing this?
Thank you

 

[mylesmuscovys]

This post has been yo for six days. Please can somebody help.

 

[darkbluespace]

I have only done 2 duck hatches, but I learned from the first attempt that my humidity was way too high. The second try I did a dry hatch and humidity was about 35% without adding any water and I had 6/6 ducks hatch. I would recommend low humidity not higher humidity during incubation.