I have a male CT betta who loooooves it when I leave my plant cuttings floating on the top of my water in my tank after I prune my plants. However, it looks kind of sloppy. Are there any lower maintence plants that actually float on the top of the water? It's fine if their roots or whatever hang down, I'd rather not have to let my tank become overgrown either. However, I would not like them to be very large as to completely block the light that gets to my other plants.