Colleen, I would really like to run my pumps all winter, but am worried about ice dams forming in a stream, I would love your advice in my
first posted thread here rather than hijack yours....[/QUOTE
That's just fine to post here, that is why I am here, to help if I can. I need to know what weather zone you are in and what kind of filters you have. External filters can freeze during exteme cold so all my pumps and filters are all underwater. Usually the stream would ice up but water should still flow under ice. You could disconnect the stream and just run pump in water with good sized filter and heater when exteme cold. Heater should be placed where water circulates good to evenly heat whole pond better.