Been a while, but just some quick info.
we all know that all of our hatching situations,etc. are different, so bear this in mind in what i say here:
I have three O20E units, as you know if you have read the whole thread (and have a memory). I have been a bit displeased with how this bator is affected by the ambient temperature. It really is in no way a 'rock solid' temperature holder. I have even seen over two degree temp changes with no change in ambient temperature and RH at all.
NOTE: I AM NOT TALKING OF MASSIVE AND DEADLY SPIKES OR DROPS IN TEMP. But at various times i do need to adjust temperature up and down in mid course to keep things where they need to be.
I personally wish this was not the case. but it is the case, in my experience.
I have also found that the fuller the bator is with eggs, the lower is the hatch rate. This may have something to do with air circulation; but I am not so sure about that...
The only 100 % hatches i have had have been with the bators containing only 5 to ten eggs. WHEREAS bators with 20-24 have given hatch rates as low as 79.5 %.
Again, there could be many factors involved here. But I just wanted to put this up so at least someone could see it and store it in his/her mind. Maybe it could help someone.
I USED to be a big fan of the Brinseas.. but after having so many problems with defective products I rank their reliability well below the LG that I only use during the winter
i am still using two of mine.. though I have sent several to the dump.. and these last two will be sold or thrown away in less than a month from now