I have a recently installed pondless waterfall in Denver. Temps can get below zero for several days in a row. Besides just shutting it all down and pulling the pump would a pond heater work to ensure it won’t freeze up? I was told running water won’t freeze up and I can run it all winter but I want to make sure the basin area with the pump won’t freeze. If so, what type of heater would you suggest and where should it be installed? Thanks.

If you have a pondless, your pump is located about two feet deep. If your frost line is not 18 inches or more, you should be OK. However, the real problem with a pondless is the stream which can produce ice dams which needs monitoring. You also need to top off any water feature that may run in the winter. You have to make the decision according to your location and climate. If you decide to shut it down, make sure the pump is disconnected at the pipe.