Thank you so much for the response and the suggestions! I want lilies and lotuses for some water cover/protection for my koi and goldfish from birds. I notice you do not have hardy lotuses on your list, is it because you have had problems with them?
I can't wait until the water is 60 degrees because it never warms up to that temp. It is about 20,000 gallons and 6 ft deep at the deepest point so it stays consistently around 50 degrees.
Do you have any websites that you trust to get pond plants from?