Pond Boss Forums Thread Like Summary - Semi Trash Pump

I am looking at a semi trash pump to remove some floating weeds like duckweed and algae. Also I want to use it to remove muck.
My question is 2"or 3" I plan on using a dewatering bag or two to have the water flow back into the pond.
Probably a HF model.

If you plan on pumping very much pond bottom muck I think the standard trash pump would be a better choice as it is a little more expensive and would cause fewer pumping problems with heavier coarser sludge type of materials. As I know it a semi-trash pump is more of a clear-muddy water pump. The pond bottom could easily have some sticks, heavy leaves, and small stones in the muck. Additionally IMO and experience the 3" model will be well worth the extra money for bottom muck.