"Paul" wrote in message
...
My pond will be approx 3750L do I need a pump that will pump that
quantity an hour or one that pumps less. I seem to remember reading that
pond water should be circulated every 2-3 hours is this right?

Paul

Your pond should be able to pump, at a minimum, the entire volume of your
pond in one hour through your filtration system. 2 or 3 times is even
better.