Works in Progress
Filled the right side with mostly perlite and a bit of potting medium. Stuck some plants in that I've found around the house but will probably be changing it as I find little plants at the nurseries.
A friend just gave me a baby Beta and that's in the pondlette (for lack of a better word) on the other side. He doesn't seem to mind the waterfall too much, but I'll only turn it on once in a while to filter the water and keep it from turning green.