Am I the only one to see there's something wrong on left side of this set-up?
The piece of wood going straight up; seems too straight n singled out. Get a few more like this one (same height) or a different piece. Not trying to b harsh but for best interest lol
Same thought, but if you have an angled piece that could sit in that corner you could do the 'up the ladder' approach with some anubias or moss...maybe even a few crypts.