Originally Posted By: Bill Cody
A small pond this size can develop a temporary thermal stratification. Windy conditions and/or cool rain can remix the pond.
For your needs I would seriously explore using a pond circulator instead of the fountain type.
https://www.pondliner.com/kasco-marine-3400cf-pond-circulators


I thought that for getting the duckweed all to one side. I believe all I have to do is mount motor horizontal and not vertical.

Turning prop down instead of up supposedly becomes a deicer.