For a 10'x15' pond with a waterfall, I’d personally lean toward pumps that are reliable and easy to maintain. From my experience, Best Pond Pumps From EasyPro hold up well over time they’re quiet, energy-efficient, and handle continuous operation without overheating.
Filters are equally important. For a pond that size, a combination of a pressurized filter and a skimmer works well to keep water clear, especially if your waterfall is the main circulation point. Avoid generic “discount” pumps they tend to burn out quickly or struggle to maintain flow, which can really affect your waterfall’s look and your pond’s water quality.
One tip: size your pump for about twice the waterfall’s flow requirement. That way, it compensates for any head loss from the waterfall and ensures decent circulation without stressing the pump. Also, routine cleaning of the filter and skimmer goes a long way prevents clogs and keeps everything running smoothly.
In short, stick to well-reviewed, tried-and-true brands, and don’t skimp on pump size or filtration. It makes a huge difference in maintenance and overall pond health.