I just started my new stocktank pond and I have no plants. The pond is in full sun and right now very green. I was told that I need plants to clear up the water. I plan on keeping the pond going through the winter. I am in need of cold hardy plants that I will not have to take out of the pond as I have no place to overwinter them. Check out my trade list and see if I have anything you are interested in or I can do postage. Thanks!