Hi All;

Janet, his 1.5HP pump *may* be smaller / lower flow than your 1HP. There are sort of 3 levels of pump HP ratings: "full rate", "up rate" and above ground. The relationship between full and up rate is clear, even if it's not explained often. But I've never been able to figure out how AG ratings are generated.

JAA, if you can measure the diameter of your sand filter, and the OD of your pipes (and maybe, send some pics to poolforum.pics AT gmail DOT com), I can probably offer you some specific advice.

Ben