I have had decreasing luck with plants and my koi each year as they grow. I have thrown in the towel and have put in a second pond for plants. It's connected to the main fish pond, but safe from their clear-cutting ways. 'Luckily' it was a bad winter for plants so I have to start over. I had WAY more lilies than I had room for. I will be looking at the sale/trade forum soon! I do give the jerks floaters to play with and duckweed to eat - they LOVE that stuff. Wire, cages, inverted planters - nothing has kept my lilies safe from the fish =(