Substrate: some sand and gravel
Flora: Java moss, Java Fern (reg & needle), Anubias, D Hair Grass, Riccia, Frogbit, Dwarf Chain Sword, Salvinia, Utricularia and a couple of other things.
Fauna: Shrimp, Copepods, Snails, Flatworms and a few Tubifex worms
I know people say the Flatworms are bad and don't like copepods and Tubifex but everything seems really in balance and growing well!
This is the culmination of a number of ideas
1) the back is a moss wall that i grew horizontally for several months before attaching to the back
2) There is a log with moss growing on it that I grew almost emersed for several months too