How often should you let fresh air onto the egg tub

Daft question maybe but how often is recommended.weekly,fortnightly?
Ta

i wait till last 2 weeks of incubation and i crack the tubs once every 3 d ays

Thanks,so do you just keep them sealed air tight until then,then?

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Originally Posted by docturgonzo

Thanks,so do you just keep them sealed air tight until then,then?

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no just a lid is all you need if you use the substratless method with the light diffuser

I seal my tubs with press and seal, then I snap on the lids. I open them for a few seconds once a week to exchange the air.
http://i154.photobucket.com/albums/s...clutch1002.jpg

Thanks dave, I'm using the same method as you so once a week it is. Thanks guys....typical, you think you have every thing covered before the eggs drop and as soon as they do there's always something your unsure of. Thanks again

Quote:

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Originally Posted by docturgonzo

Thanks dave, I'm using the same method as you so once a week it is. Thanks guys....typical, you think you have every thing covered before the eggs drop and as soon as they do there's always something your unsure of. Thanks again

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If your using press n seal once a week is needed due to higher condensation. When using just the substratless no press n seal dont need to check on them till Day 40

If you use press n' seal depending on how many eggs and egg box size I air them once a week. but the last 10 to 14 days before hatching I peel back a very small hole in one of the corners. This is when the eggs need the most oxygen.