Aspen as substrate?

Don't use sphagnum in conjunction with aspen. The humidity will cause the aspen to mold, and that's the last thing you want going on in blood python cages. Mold spores will be present whether or not you can visibly see moldy substrate.

Personally I can't stand aspen for blood pythons, especially young ones. It's too much of a dessicant, and then when you do try to keep humidity at the correct levels, mold happens faster than you can blink. All of the constant cleaning/tweaking of the snake's cage doesn't allow for a consistent, quiet environment. I use indented kraft paper or unprinted newspaper on all of my bloods & short-tails & have a good track record with it.

K~

Yea I'm still working with my humidity trying to get it where it should be. You know...I knew what I was getting into before I got them, but wow...the male is (from what I've been able to tell in the past two days that we've had him) fairly docile. But the female is pretty much pissed at the world. Like I said above, I knew what I was getting into, and really I was expecting them to both be quite aggresive. Hopefully with handling she'll tame down.

KLG: I wouldn't use them together. I was planning on dumping the aspen, switching to newspaper and providing a humid hide with the sphagnum.