winter pond care
I have to agree with the last comment on the pump being a good winter choice. I have had my koi for 14 years and they spend winters outside, Nova Scotia Canada, so they do have lots of cold conditions. I've run the surface heater and it doesn't always work quite as well as they say. The pump, I have on a two foot ledge of a 4 foot deep pond, it' s my skimmer pump and has a large water turnover, and I use a hose that just shoots out of the surface and arcs inward on the pond. All winter long. Keeps it open for 95% of the time and will freeze over, even the moving water in the air, but I just use a saw to cut a hole in the ice and get my air exchange that way. My fish seem fine with the circulating water. My pond is about 6000 gal though so it is larger. Power outages are a pain thought and I've had occasion to have to break the ice with more than a hammer to open it, but I don't reccomend pounding on the ice. Hot water would be best. I have used a hose attatched to the kitchen sink for this.