Candling eggs is at ten days old right???

I usually candle mine at 4 days old. If i do it at all... I often find 6 days is a bit easier to see signs of fertility, but you can usually see a little beating heart at 4 days.

I usually candle mine at 4 days old. If i do it at all... I often find 6 days is a bit easier to see signs of fertility, but you can usually see a little beating heart at 4 days.

 

I only know how to look for veins, though what does a heart look like???

I candle at 5-6 days

Veins are easy to see, but the heart is also usually the first thing you see in regards to the developing embryo. If your torch is good enough, you should see a spot that is beating. I never have any trouble seeing it but family I've tried to show seem to have some difficulty at first.