snow over an open spot of water will leave a tunnel. did you have aeration in the
pond??? Ingrid

"Dr. Bill Duffy" wrote:

Woe is me. I was finally able to see my pond and 8 of my beautiful Koi
didn't make it thought the 2+ feet of snow covering the pond. I think the
snow didn't allow my heater to allow the gases to escape.
Oh well, I will start over. Some of the Koi that dies were over seven years
old.
Dies anyone have any other thoughts on what might have happened?
Bill