Yeah I was planning on building a few ledges, and those puffy parts you see on the right I wanted to carve out little caves for them to sit in.

I guess I can use an old Foam Background from Exo Terra for reference, they have little streams carved in...

And as for the wood I decided not to foam it in just in case I ever need to clean or break the tank down or something. My uncle found some awesome huge rocks that I might use to prop them up. I could cover them with dirt and make them look like natural hills. These are BIG rocks I'm talking about. XD;

Thanks for encouragement Don! Hopefully this new layer of foam dries quickly so I can get to work on siliconing the whole thing together.

I have two and a half tubes...thought I had one more lying around, I'll have to look for it...