| High Steve,
The reason the pump draws less power while it puts out more water is that, as you mentioned, the impellor is designed for a lower head. It won't be more efficient motor HP to water HP.
It's still a good move forward if the rest of the filter system is designed to work at that lower head. Luke, on Koishack is developing a propellor driven pump to work inthat area too but so, while it's way more efficient, it's very expensive and hard to find. If your pump is a big step forward for conventional ponds as long as the builder understands how to design pond plumbing systems properly.
What's the web address of the company. I'd like to look at the design curve and such.
You didn't mention the type pump, so I'm assuming it's a centrifugal pump. |