As for dumerils, I keep her around 50ish humidity. They like it cooler so I keep her ambient around 79-80F and give her a hot spot of 87F on flexwatt. The carpet is kept around mid 50s humidity too but I use a CHE for her heat and have that set to 90F for a hot spot with ambient on the cool side around 80. Depends if your carpet likes the floor or not. Mine hates the floor so I use CHEs or RHPs when I get her an AP cage. If yours sits on the floor, you might be able to use flexwatt. Bottom line is neither of them require anything special as far as temps or humidity unlike a BRB.