Thanks for the advice Kelly. I think that you are on the right track about humidity/moisture being the problem.

As far as temps...

The laying tubs are a tupper ware container, spray painted black on the outside, and filled with moist spag. My first year with pythons I used small tubs because I was planning on artificial incubation (just what I was used to). But since then the tubs I have used are almost the full length of the females tub. They have the option to lay from about 82 - 92 degrees inside the box. Every single female, every single time, without fail, has laid her clutch and maintained it within 1 degree of 90. So I think I am going to stick with doing the same. I once pushed a tub too far into the rack by mistake which changed where the heat was in relation to the laying tub. Overnight the female was actually able to move herself and the clutch about 3 inches through fairly dense moss to keep it at the temp she wanted. I thought it was pretty neat too see.

Also, I do have an expensive and accurate thermostat and a digital thermometer on each incubator. And I also check temps several times a week with the temp gun.

What really gets me is that there is only one difference between the clutches using MI and the clutches in the incubator, and that is mom. I set up my incubation tubs in much the same way as I set up the laying tubs for my females. Hmmm... I guess they know something I don't.

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