Wow those are both beautiful . I really like the amazon one. I wonder how much upkeep that would actually be? It looks like most of the trees are moss. For building the "trees" Could you use any random wild branches or are only certain types aquarium safe?
I would love to create something like that in my tank,
I am interested as well, for the type of wood used, it has very straight and tree like branches and apparently smooth bases. Branchy manzinita is close but not exact.