I am working on planning my first viv, and was wondering if I should use a false bottom or hydroton clay. The viv will be in an Exo-Terra 18"x18"x24" terrarium. I plan on having a waterfall that is pumped through a tube that is hidden in the background, and then on down to either a small pool area, or some sort of drainage point, where it goes back through the drainage layer, and to the pump (sorry it isn't a very clear explanation, but I'm in a hurry). I might be using Exo-Terra plantation soil, with some coco-fiber or tree fern mixed in. Thank you in advance for any advice!