Day 21 the eggs were rocking with no sounds but now on day 23 ive noticed light gray spots are popping up. I took the advice to place the eggs in a large container with hot tap water to check if there was movement and there was(I think). This is more stressful then when I went to give birth to my own children!!!! This is my second attempt. My first one I only had 3 eggs and they all died at differant stages so I thought I fixed the problems. This time I did 3 again and they were all doing well until the 21st day. I went out and got a new thermometer to made sure the other one was correct and it was. Does anyone know what the light gray spots are?