I have a flex 9 with a dwarf hair grass carpet in the front, some S. Repens behind them, crypt wendtii on both sides, a lava rock with Japanese pennywort attached to it, a few stems of pogostemmon erectus, and a few stems of broadleaf ludwigia in the back corner. I have 2 honey gouramis (I keep them together when not breeding), 1 sparkling gourami, 6 pygmy corys, and a nerite snail. Just got my 2nd flex 9 and am planning on a large school of ember tetras and maybe a female betta or a Bolivian ram with dragon stone and heavily planted.