So I have been incubating my first batch of duck eggs. I started candling on day 8 and I am now on day 10!! Is it okay to open the incubator and candle them every day? I am so fascinated seeing the blood vessels develop every day. What an amazing and exciting experience! Here is a photo at day 10: The blood vessels arn't like some of the photo's I have seen but I can defo see them. Does it look healthy to you guys?