This could be a looooong discussion XD.
•It depends on a lot of things like :
•Your misting schedule/ humidity
•Your temps
•If you are using glass or screen
•And ultimately the plants you will be using
Lately I’ve been using organic Promix (I’m in canada), and I’ve been covering it with some coconut fiber liner or mat. I cut it to fit. This way plants are happy and your cham wont eat the soil (wich they like to do sometimes).
Another option would be to use the biodude’s abg mix. It’s safe for your cham and will please your plants as it is full of air pockets and drains well

. I would buy it if I’d live in the US. The only thing with this is the fact that it does not contain fertilizer of any kind, so your plants will soon be lacking nitrogen and leaves will turn yellow...
If you fertilize, then you would have to take the plant out to the shower and let it drain well after you water it with fertilizer and take care to replace the top soil to make sure Pascal won’t eat it.