Today is the day to choose....

[poolbee]

FWIW, my pool builder was pushing the SWG,(we had decided to use it even before contracting him) but he is also the one that put table salt in the pool and now I have an iron/staining problem. He was probably hoping I'd come to them to fix it-sorry Charlie.
As Roll Tide said, 2-3 minutes a day and that's it. I test the water and adjust my output as needed-and it's usually not needed.