Q.Overwinter Hardy Water Lilly
I have a hardy water Lilly in my pond. Right now it is sitting 22″ below the surface. Our pond doesn’t freeze solid, we a windmill aerator that runs year round so a thin layer of ice does form on it. Would I be able to keep the water lilly at the 22″ and have it survive the winter?

Certified GKH Gardening Expert
With hardy water lilies, you can move them to the deepest part of the pond to protect them from repeated freezing and unfreezing. You are in hardiness zones 5b to 6a, so be sure your lily is rated at least that. Here is more:
https://www.gardeningknowhow.com/ornamental/water-plants/water-lily/wintering-water-lilies.htm
https://www.gardeningknowhow.com/ornamental/water-plants/wgen/winterizing-water-plants.htm