Day 4 no veins

[FC16]

It’s day 4 and I have just 6 eggs in incubator
Around half of them had some noticeable veins when I just candled
The other 3 didn’t have signs of any veins
I’ve had humidity issues and it keeps sitting around 60-65% but it’s now fixed
Could the humidity be an issue or is it just too soon?

 

[sourland]

It is possible that they are not fertile, but I would wait until at least day 7 before discarding them.

 

[Skipper7410]

They may not be fertile. Check again in a few days and If there's nothing then I'd ditch em.