I have had excellent hatch rates with eggs. Mostly always around 95-99%. But Marans eggs are kicking my butt. I have a hard time with them. I think it's a humidity problem. What is a good percentage to be on for first 18 days and then the last 3. I have heard 35-40 the first days then 60-65. But my question is I'm using a homemade cabinet bator I built last year and now it's running and the humidity is around 35% with no water added. Do I still need to put some in there?