Hi everyone and to the Hoffmans- don't worry. We are all trying to learn! I am not ordering a pool kit. We are not diyer's on project like this! However, we do intend to install a SWG ourselves and built our own waterfall. I want my pool water to turn over every 8 hours or so and I want an energy efficient pump. However, the size of the plumbing affects the flow. I believe that a larger horsepower pump with a high GPM ( gallons per minute) flow rate is only effective with the correct size plumbing lines. I understand that my builder uses 1 1 1/2 lines, and the GPM for these are about 44. So even if my pump will push 65 gpms, it can only do it through pipe that can handle it. I am going to talk to my builder about 2 inch lines. I have not found a 2 speed superpump, but I am still looking. Once I choose the correct pump and size pipe then I need to make sure that I have a filter that is over-sized a little. Good luck and keep us posted on pool progress. Thanks to everyone who continues to give input. Webfeet