I just require a little advice.
I was just wondering which type of pump would be best.

1/ A pump that sits on the bottom of the pond and pipes going upto a filer
and returns back.

2/ Or a pump that sits in a pump house out side the pond and pipes run from
the pond through the pump then into a filter & uv light & back to the pond.

does anyone have any comments as to which one would be the best.
Thanks
Mostyn