So what were you asking? My Koi pond is very small, 10 X 13 X 28" deep. It is right by the front of my house and front porch. Right now there is an empty Skippy and non functioning waterfall at the north end and a Rubbermaid box with a lightbulb shining at the other end. The Koi pond has a hard cold solid surface of ice and a layer of fluffy snow ontop of that surface about a foot thick. I assume the Koi are swimming veeerrrrrryyyy sloooooowly under those layers.