I switched all our vein eggs to one bator, and the ones to recheck in the other. What day should I recheck the eggs, day 10 or wait til next Sat?
If it were me, I'd wait till Saturday. At that point the difference between blood rings and the developing eggs should be really obvious. That's a good idea to separate them. Whenever I have questionable eggs in the bator, I always give it a sniff each day at the vent to check for eggs that have gone bad. You'll know immediately if one has gone bad. It's the worst smell in the world.