Quote Originally Posted by mas985 View Post
A turn per day is a bit of an outdated rule of thumb. You might want to have a read of this study done in 1984: http://consensus.fsu.edu/FBC/Pool-Ef...on_systems.pdf

Even back then, they recognized that only 3-4 hours of run time was needed for the average pool independent of pool size. Unfortunately, the rest of the pool industry has been very slow to adopt this philosophy. I run my pump only 4 hours per day in the heat of the summer and 3 hours of that is on low speed. Total turnover is only 1/2 the volume but the pool is more than clean enough for me. I would go shorter but I need the run time for the SWG.

Anyway, on to the OP. With a VS pump, the most efficient speed in terms of gallons pumped/watt-hr consumed is around 1000 RPM. I would start with that for about 6 hours per day and see how things go. Also, if you find your skimmer is not collecting enough debris, then you might want to have a separate 1 hour run period at higher RPM (~2500 RPM) for the skimmer.
Hi Mas985,
Can I clarify if you mean 1 turnover per day (= roughly 4 turnovers to filter 98% of the water) or you actually mean 1 turnover being roughly 12000 gallons in 4 hours being 1/2 the volume?

I have varied the the pump run time and now filter 24 hours, That is at a slow speed during out of hours but sufficient to make sure almost all debris, leaves etc are skimmed rather than sink and require manual removal. During swim times the pump runs faster to keep a 6 hour turnover rate of 100% of the pool volume. My pool water has always been good in clarity but is now excellent and when the occasional manual vac is required there is no dust cloud produced when vacuuming just the occasional leaf (there is always one)