Here is a link to our day 7 candling --> https://www.backyardchickens.com/forum/viewtopic.php?id=42905 In my octagon 20 I had 15 serama eggs that spent 4 days in the fridge and 8 replacements. Under my broody I had 7 mystery swap eggs. Out of the ones that were in the fridge and showed fertility at day 7 only 2 look fully developed and 1 maybe. Out of the 8 replacements 2 stopped growing. I wonder why the refrigerated eggs stopped growing after a week. They were in a different incubator than the replacements but the swap eggs were in there too and they are all fine and growing. If the fridgerator affected them why did they grow at all?