I have two rings floating in my pond with water hyacinths in them. They mound too much, not to mention spreading way beyond the confines of the ring. I would like to replace the water hyacinths with something else in at least [ATTACH=full]104445[/ATTACH] [ATTACH=full]104446[/ATTACH] [ATTACH=full]104447[/ATTACH] one of the rings next year. The mounding blocks the view of everything in the back half of the pond. I would like all the other benefits of them in the new plants-\-the "cleaning" they do of the pond water, the shade, etc. I have attached a few photos to show what I've got. The first is what I put in the spring, and it indicates the constraints I had hoped to put on the hyacinths (knowing full well their propensity to spread); the others show how I got it wrong. Note I've thinned them out almost weekly for the last several weeks, and in some cases filled entire lawn and leaf bags with what I've taken out. I'd like at least one of the rings to actually contain what I put in it. Probably both. Any suggestions? Thanks!