I recently upgraded my Intex model 637 model pump for the higher 2500 GPH pump and was wondering what to do with the old pump. The smaller pump had degraded down to less than 600 GPH and my SWG didn't like it. I have the new 2500 GPH and was wondering what to do with the smaller pump. I had an idea. Earlier in the year I bought a small sump pump to hook up to black hoses to help heat the pool but that small pump failed and dumped oil into my pool. I have this extra pool pump just sitting there and it is external of the pool vs. being in the pool like the sump pump was.
A trip to Lowe's and I find 1" to 5/8 hose fitting PVC adapters. Not quite the size to fit the pump, but a little JB Weld fixed that.
Fittings "welded on"
I layed out 400' of black hose in two coils with some landscape fabric beneath them and attached it to the pump, one short hose for the intake into the pool, and the output to the coils, again back into the pool. No filter. Ten degree rise in temps in less than 12 hours.
Hose coils on the ground:
Heat output visible in the water:
Now with the temps in my area reaching above 100, the pool was too hot, around 98 degrees, so I detached the coiled hose and ran a short hose from the output side of the pump and attached a small sprinkler head from a Miracle Grow spreader and now I have an aerator/cooler/sprinkler.
Just another way to re-use an old pump that wasn't making the grade but it is still useable.