I don't seal. The best ever hatch rate I had was 100% healthy babies from a 11 egg clutch. Hatched in a mixing bowl with a hand towel thrown over top, and I misted the towel off and on as necassary.
I actually normally use egg boxes of various sizes, but I couldnt find anything of a proper size for the huge 11 egg pile.
This poll proves to me that ball python eggs are pretty hardy things, and don't need any particular exact keeping to hatch. With people who seal and never open to people who never seal and move the eggs for candling etc... still get good healthy hatchlings!
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