Want to build my first Viv.
I want to build my first viv for live plants and want to have a waterfall. I've looked at some of the fake rock builds, and I have an idea to build an entire background/waterfall and include tiny spots, holes and crevices to add plants to. I guess what I'm wanting to know is:
Would it be feasible to build the background/waterfall from polystyrene and grout? I would like it to be non-toxic and not erode too much.
Would it also be feasible to build the waterfall/background first, then build the viv around it?
I want the viv to be about 3'x3'x5'high and would like it to be mainly for live plants and maybe a couple of green anoles.