Hi guys 40 days ago I put an egg in my incubator, the temperature were about 29-31 ºC and humidity 80-90%, I used vermiculite ( microwaved to sterilize it) but today I've find this
What do you think?
I don't have a lot of hatching experience. But, by the pic, it looks like your substrate was too wet and the egg obsorbed too much moisture. @HermanniChris@Tom might be able to give more thoughts on it.
Simply looks as though it was never fertile to begin with.
And yes, too wet. Many times I won't wet the vermiculite at all for Hermann's. As long as air humidity is at least 70% they normally do fine and hatch.