OK. Maybe I have over informationed myself. This is a temp and humidity ?

I have a L.G. with a fan. I hatch quail. I have been pretty successful in the few hatches I have done. Any non hatched eggs never started to form. Except of course the expensive ones that suffered a looooooong power outage last fall.

I fill the gutters and lay paper towels down,( the wire is a concern as cots have such tiny little feet ), I try and keep the heat to 99.5. It bounces all over by 4 degrees for 2 weeks and they seem to be affected only by the length of incubation. 16 days to 18 days instead of the 17th day. I notice that when I lockdown on day 14 and add a wet sponge the temp drops a few degrees.

Should I adjust it to 99.5 or leave it alone?