ok, so I am getting the 20 H for my leo cause the 30 isn't available yet. I really don't have the room for another 30 right now anyways. I guess my question is would it be possible to add levels out of slate or something..I am not sure I want to go through the trouble though if I am going to eventually go bigger =) I have driftwood I can add instead of levles too. I am not sure she would even use levels. I did see her climbing the vines after a cricket once though so she does climb if there is good reason lol. I guess I just need suggestions or a 20 L =)~ I WANT to give her as much space as possible, but I am not sure if I have enough space available for a 30 anyways. Thanks!