Tips for candling dark eggs?

[KikiDeAnime]

I have 28 chicken eggs in the incubator currently on day 7. I decided to candle a few eggs but I only ended up candling just the EE eggs as the others are too dark to see inside.
Any tips?

 

[Know it All]

What are you using to candle them? It may not be bright enough. Allow your eyes to adjust to darkness before candling (and candle in a dark room). And at day 7, you aren't going to see much. I would candle at day 10 at the earliest. Brown eggs are also much harder to see into, so that makes sense.

 

[KikiDeAnime]

What are you using to candle them? It may not be bright enough. Allow your eyes to adjust to darkness before candling (and candle in a dark room). And at day 7, you aren't going to see much. I would candle at day 10 at the earliest. Brown eggs are also much harder to see into, so that makes sense.

I use different things. A super bright flashlight that belongs to my dad, my phone flash light, and a candling light I got off amazon.
I see veins in the EE eggs at least.