So I built my own bator out of a spare kitchen cabinet and a proportional thermostat I had leftover from a snake I once had. The bator is working great holding steady temps between 99.5-99.7 and humidity at 45%. Here's the build thread https://www.backyardchickens.com/forum/viewtopic.php?id=62380&p=1 I put 13 guinea eggs in on 6/16, and 11 BR eggs on 6/21. So today is day 17 on the guineas and day 12 on the BR's I candled today and had 5 clear guinea eggs and 1 clear BR egg. I cracked them all open when I threw them out and there was nothing growing. Of the 8 guinea and 10 BR eggs left, I can see movement in them all This is my first time hatching, I guess the clear ones weren't fertile?