Clears usually all you can see is a yolk. You might want to pull those after 7 days if there are no veins because they'll explode after a while.I’m worried my one egg that was developing so good has a blood ringI’m not sure what they look like but I’m going to go look it up. I also have two that look like when they started- just a floating yolk it seems. Would these be considered clears? I won’t move them unless they smell but just wondering how many chicks could potentially be born.