I bought the Farm Innovators big incubator and have put 21 eggs in it. My old incubator was the Brinsea Mini. Directions for the Farm Inonovators has the humidity during the first 18 days at 50-60% The Brinsea lists 40 - 50%. I'm confused since an egg is an egg right? I've had 90% successful hatches in the past with the Brinsea at 40/50 and have done that for the past week with the new incubator. Am I being dumb? I seem to be adding water at least every 4 hours to maintain 45%. Any thoughts?