Don't get too hung up on a particular number. Above 60% is usually fine. I know folks that hatch Marans with zero water at all, 25-30% humidity. I can't even remember what I hatched mine at. I know they always had the smallest air cells, because of the dense dark shells, but they seem to hatch great.
p.s. I assume you know your 2 CL's are cockerels?
p.s. I assume you know your 2 CL's are cockerels?
