Hey thanks! Very little maintenance required- just feeding the frogs every day or so and daily misting. I have set up a misting system so that part is automated too.
It is a false bottom system- the substrate is held up by an egg crate/plastic window screen shelf that is held by pvc sections. There is a large open pond, water drains to a sump where it is heated, then pumped back into the tank where it runs down a fiberglass/hardware cloth stream and through a hollow log; bot empty into the pond.
I use 2 250 watt iwasaki halide bulbs that I had leftover from a reef aquaria upgrade. The substrate was totally covered with selaginella, but this summer the misting pump died and I guess during some vacations it got a bit hot and much of the selaginella died back. Its recovering now.
For the back wall I was somewhat unconventional- it is steel mesh on a wood frame. It is holding back a wall of coconut hull chunks. This has no become as populated with plants as I washed so far. I probably should have mixed it with sphagnum for better water retention.