Top on or Off Eggs?

When putting your eggs into the incubator and each clutch is in a seperate container should I keep the tops off the containers or leave them on?:confused:

on to hold in the humidity

On if you want hatchlings.

Off if you want nice dried out non viable eggs.

yeah you definatly need a good lid. I had a clutch last year that wouldn't fit in my normal egg container so I used a rubbermaid tub. well the lids arent very tight and my eggs started to dry out after two weeks. so I had to use seran wrap to hold in the humidity.