So that would be more make up water with a tad bit on the side of flow thru?
Getting down to 2gpm with a 50-60gpm submersible pump by changing impeller speed won't happen tho. Head pressure will be gone and the motors can only be cut down to about half speed due to the thrust bearings, so naturally they don't offer anything with more than a 2:1 speed regulation.
I'm hoping that someone comes out with a better motor before I poke a hole in the ground. From what I have seen, Grundfos has the best motor out there so far. It would be nice if they at least had a 10:1 motor, then you would have many more pump options that could be tailored more closely to one's specific requirements.
