I had a houseplant that was doing lousy so before I threw it away I took a bunch of cuttings and floated them in the tank eventually planting them. They seem to be doing well and even forming new leaves with only fluorescent hood light. Is there a chance they will spread or just grow upright? I really thought the leaves would just rot off being submerged constantly but months in, not a one. Front plant, the rear one is (gasp) plastic.