Ha! I know what you mean about dendroboard. Even though I've learned a lot over there and the people are really knowledgeable and generally mean well, if you ever talk about mixing pumilios with a chameleon and some hermit crabs, their server will physically implode.

Now that you mention it, I did try growing thuidium moss on that slab. Most of it didn't take, though. There's some other variety that sprang up in its place. Also got some riccia in the back that's doing well.