I have to move my little guy in his big enclosure sometime next year.
But it's wooden and I have a hard time thinking about how to heat it safely.
Currently I am using a small PVC cage and the temps are perfect in there but it took me literally months of experimentation to get it right.
I heat the PVC with a RHP for ambient temps and a heatmat underneath the enclosure for contact heat. It works really well this way. The pvc lets the heat from the mat get though very well.

But in my wooden cage I want to make it bioactive and there is no way a heat mat will do anything through wood and substrate.
I am honestly dreading the move because I have no idea how to get this to work. The RHP alone is not able to heat the snake all the way at the bottom through the hide.

And I can't buy a new PVC cage anytime soon because it's too expensive in the proper size now (I am going to move myself soon). And I still have the wooden cage I bought when I didn't know better.