Any temp from low 70s to low 80s and any variation in that range will work fine for successful hatching. I used to incubate panthers @82-83 then found room temp worked just as well (maybe better- variable temps might make stronger babies). Think incubation time is about the same as in the 70s.
I'm wondering how you have the eggs set up? I use tupperware sandwich type boxes- the plastic boxes for food storage with lids that seal airtight. Do you have lids on your containers or are your eggs set up directly in the incubator without lids?
For substrate, I take vermiculite, fill a small bucket mostly with vermiculite, then fill that bucket of vermiculite mostly with water, then grab a handful of vermiculite and squeeze as much water out of it as I reasonably can (make it stop dripping water, but I'm not extreme about it- a good hard squeeze for a few seconds is all it takes to get it in proper moisture range for me). I place the then squeezed vermiculite in my food storage container to set the eggs on. I fluff the vermiculite up a little with my fingers so it is loose, and then press my eggs 1/2 to 3/4 of the way into the vermiculite. I then seal the lid onto the container. This vermiculite and sealed container and moisture is true for all chameleons I have bred, including panthers and veileds (true for nearly all the other lizards I have bred too (dozens of species)).
Long ago I used to poke holes in containers for air circulation and weigh the containers every couple of weeks and replace evaporated water. I haven't done that in years. An expert studying lizard egg incubation in a laboratory setting thought I was funny for doing so and asked me how much air exchange I thought eggs get underground. Since then, for many years now I leave them sealed and open every few weeks to check eggs and throw out any bad ones. If it is obvious there aren't any, I leave the containers sealed and do not open. If I am unsure I open and check. This prevents evaporative loss and I never have to worry about humidity.
I just put the whole container in a cupboard under the sink in the bathroom where it is dark and temps stays above 70 year round...
Kind of cool we are seeing more and more Chinese citizens here on the forums.
Welcome!
mildew or mold- probably bad eggs or possibly bad nesting substrate (dirty dirt)...
