They are probably putting this to the times that the old hen gets off the nest to eat and relieve herself. ha, haApparent
Apparently, new research shows that turning the temp off for an hour a day improves hatch rates?!? But the fan should stay on! The new brinsea octogon 20 advance ex comes with a cooling system! I have just ordered one and am going to use my old brinsea octogon 20 as a hatchery! Slightly nervous about the cooling system! May give it a miss for the first few goes! Lol