Hi,

That's just it. Perlite doesn't pull water from the eggs like vermiculite, even at the top. The top layer of perlite, the one with the most egg contact, is always dry in my egg boxes. However, the air within the box is always very humid.

I also fill my boxes with as much medium as they will hold, while still allowing room for a big clutch. That acts a humidity reservoir. The more medium in the box, of any type, the more stable conditions will be. Thanks.

Will

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