@Erba , please can you tell what temp and humidity are you using? I have a HDD incubator and I will set 20 Sussex eggs in 10 days, but it will be my very first time with Sussex eggs and they are expensive, so I would like to make sure I am doing everything correctly. My very first chicken hatching was not successful - 2 chicks out of 19 eggs and they were also expensive (Brahma and Orpington),