Last time we used the egg tray to turn the eggs but could not keep the temperature regulated because of filling the water reservoirs.
As you can see most of our eggs have a greenish blue tint to the shell because these were laid by Americana chickens. Other than Buff, Orphington hens, Americanas are the best layers year round for us. Believe it or not, I have train all of our Americanas to lay on two lawn chairs with a pillow in the seat on our back porch. For the most part, we do not have to hunt down their eggs.
So between March 16-20th, we should begin getting little peeps and chicks.