Long shot with substrate. I used NE Herp substrate #1. This also shows the Poret filter pretty well.
Very initial planting. Some Phalaenopsis orchids, which did very well in this tank's previous life as a half-full paludarium on a log with their roots in the water. Anubias heterophylla and Sagittaria subulata in the water portion. A little varigated Ficus pumila on the left, a Cryptanthus NOID by the right stump, and the first layer of live oak and magnolia leaves.
I wish I'd made the buttress roots a little taller because the substrate and the leaf litter is burying them.