I still don't understand. You don't measure heat or humidity? Is it just a heater heating? They need an undertank heater for belly heat, put on a thermostat, and measured with a thermometer to make sure temps are good.
Each tub you put those babies in needs a hot side and cold site. 80-82 cold, and 90-92 warm. I know you are trying your best, but you have no idea what your doing.
I am really sorry and I hope we can get these creatures in suitable homes. But, if you can't take care of an animal, you shouldn't buy it. Study everything, and then study some more. Make sure you know what your doing, before you do it.
I screwed up on my first snake because of pet store directions. Thank goodness I found this site to correct it. BP.net has saved many animals, not just ball pythons. As long as you know what's wrong and change it.
Good luck.