On Wed, 23 Jun 2004 14:12:29 GMT, "rob" wrote:

Hi All,

Got a pond of about 2000gal. Deepest spot is 4'10" about 3 feet around. I
will have ice covering the pond for approximately 3 months in the winter.
Do I have to have an opening in the ice for gases to escape? Should I heat
the bottom of the pond or the surface?

I use a couple of things.

1) An Oase Pond Vent Ice Reducer (basically a small pump underneath a styrofoam
disk). See http://www.pondsonlinecanada.com/misc4.htm.

2) Roof de-icer cable along the bottom of the pond coming up through some PVC
piping. Got this idea from somebody else in the Ottawa area (I'm from Waterloo,
Ont.).