I have recently broke down my last 20 long Vivarium due it failed on me. The plants died, as well as my 3 frogs , but still have one. Now im looking to completly redo it and use a 36 bow front tank. My question is how can i create a better Vivarium which my plants survive. and how can i make a waterfall will a resecess pool at the end of it and filter it back out. PLEASE HELP?