I have a bearded dragon in my house and I was looking forward to getting my first snake, a Ball Python! I have some supplies for the snake setup already such as a cave for hiding and this log sculpture for i don't know. Anyways, the question is what type of substrate can I use and where can I buy it? Some people say you can't use aspen wood, some say you can, some people say you can use potting soil, some say you can't. Its confusing... and can I use a fake plant for the pythons setup? I have some fake plant decors laying around. Thanks!