I don't think so. the incubator was closed and it was not that cold that time . They are in the same column. of the egg tray. And my incubator has a fan too. Are the air cell day 18?
Few weeks ago, we had a typhoon which was the cause of black out for a few days, luckily we had solar panels but during night time we had no electricity for our incubator, we had eggs there that were around day 6, and we added more eggs during that time not knowing the night after we will have...