Going to try and keep this a "Betta Biotope". So that means Thai plants and fish, and blackwater-type scaping.
I'm going to look to add some wood with attached Java Fern and some Rotala rotundifolia and/or Cryptocoryne balansae in the back ground.
As for fauna, I’m thinking of CPDs and maybe some Kuhli Loaches for cleanup (instead of the corries I have in the other tanks).
Oak leaves in the filter will really turn the color nicely or you can just have a leaf litter on the ground and get the same effect.