I would take the pair out now, and start over. You need a lot more plants in there :)
I would stay away from anything artificial or fake in a breeding tank, especially if it is sharp and rough. Also, they don't provide much of a hiding space for the female. Those pieces of plants will likely die (they are already turning brown) and dirty the water, so stick with whole plants. They really need plants from top to bottom, because just having plants floating on the surface doesn't provide any spots to hide. Just wondering, what type of plants are those?