I was looking through the charts in the PondMaster catalog, and now may have it right (or I am totally off). The deepest part of my pond, where the pump will be, will be 3' and the top of the waterfall will be 4', making a total rise of 7'. The waterfall and stream will be about 12" wide. To have a 12" wide stream, I need to have 1200 gph (100 gph per inch of width) at the top of my waterfall - right?
So should I be using something like the PondMaster MD24 (2400 gph) that delivers 1344 gph at 7 feet? The next size down, 1800 gph, delivers 828 gph @ 7' (would only be a 8.28" wide stream). With the MD24, I would have a total water turnover 2.4 times per hour.
Do I have this right, or am I off?
-Dutch