How long to run pump & at what speed?

[chem geek]

Thanks Mark. I figured it was something simple I was overlooking. I really appreciate your clear explanation.

Richard

[tphaggerty]

I would add that you might want to consider breaking up your run time into 2 or more increments, especially if you are running for less than 12 hours a day. Of course, you need a pump timer to do this.

I just find that my pool seems to stay cleaner and the SWG seems to work better if I add a 2 to 3 hour night time run to the 10 hours or so I run during the day (we run during the day due to solar heating). Stuff has less opportunity to sink and it just makes me feel better to know that I am not leaving the pool completely stagnant for 14 hours straight.

[ePoolUser]

Could someone put this formula into layman's terms? I don't see where head loss fits into the formula..
>>First you need to determine head loss. In most pools that is between 45-65 ft on high speed ...
Then determine your turnover rate. Turnover (hours) = Pool Volume / GPM / 60<<

Where is head loss used in the equation?

Obviously I'm missing something (brains?).

TIA,
Steve

[mas985]

Could someone put this formula into layman's terms? I don't see where head loss fits into the formula..
>>First you need to determine head loss. In most pools that is between 45-65 ft on high speed ...
Then determine your turnover rate. Turnover (hours) = Pool Volume / GPM / 60<<

Where is head loss used in the equation?

Obviously I'm missing something (brains?).

TIA,
Steve

Here is what I had posted regarding converting head loss to GPM:

Next look up the flow (GPM) on the pump head curve for both high and low speeds. Low speed should be 1/2 of high speed GPM. Low speed head loss should be 1/4 of high speed.

Usually, the pump head curve is in your pump manual. The vertical axis is head loss and the horizontal is GPM.