The Aquascape AquaSurge® 4000 Pond Pump is ideal for use in ponds, Pondless® Waterfalls, and other water feature applications. With a maximum flow rate up to 4,000 gallons per hour, the pump is made for continuous use in either vertical or horizontal orientation.
Recommend for a COI pond but make sure you pick the right pump. I slightly over engineer with slightly bigger pump. My pond is not always well maintained as some due to cost. So I need a rugged pump especially when I get behind in maintenance. The winter is very challenging. My last Aquascape 4000 lasted almost 4 years running 27/7..