I've noticed ALOT of people trying just perlite,with no light diffuser(plastic grid),and they are getting the same bad results.
Perlite is a poor substrate to use,but it works great for substrateless incubation.In other words;If you don't have the plastic grid,then use a proper substrate(,such as vermiculite.)because the moment eggs are placed IN the perlite the whole "no-substrate" method has been changed.



Having said that...Find the light diffuser at your local home depot type store..cut it to fit(loosely so it can free float)..and then fill the box with the water level being just under the perlite.
With that done the no-sub method will then take over and humidity will be applied to the egg through the air in the egg box(and NOT from direct contact from substrate).Which could very well save dehydrated eggs.

good luck
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Charles Glaspie

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