I tried candling at the end of day 7, it wasn't really dark enough when I did it and I was only using a flash light. I couldn't see anything in my brown eggs, but in the white eggs I could see a dark, flat-looking area at one side of each egg, which stayed in the same position as I turned the eggs. Does that sound okay? I'm planning to candle again in a few days, and make sure it's darker when I do it. It's now day 9.