I have a 20g extra high (24"h, 20"w, 10"d) that is heavily planted (anubias, java fern x 4, dwarf sag x 4, hygrophilia, and aponogeton x 3).... I have 3 pieces of driftwood, 2 small, 1 large, various rocks.... substrate is EcoComplete. Tank is about 2 months old, cycled using seeded material...