I added 10 Corydoras Habrosus, and the Ozelot sword in back is growing at a rate that can only be described as frightening. I moved the hairgrass over and added some micro sword to take a "see what sticks" approach to carpet plants. The single tiny dwarf sag plant I was shipped by mistake has some runners too. I also added a simple black cloth background.
2x Koralia Nano 425s have turned the front of the tank into a bit of a whirlwind, but it is keeping it looking super clean.