What do you guys look for in the "Variable" aspect of the new pumps?
I know about running at lower rpms for longer times to save money
What other conditions would invoke pump speed changes or run time changes?.. These new unknown options are very intriguing!
With a VSP, you set the speed and run-time based on what your pool needs. That's the only criteria for those settings.
Having a sand filter, the slower you can run the water and still satisfy the requirements of any other pool equipment, the better water quality you will have.
When VSPs first came out, a couple of decades ago, the manufacturers always recommended that combination, and it works.
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