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Thread: Turn Down SWG or Shorten Pump Time?

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    mickey4paws's Avatar
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    Turn Down SWG or Shorten Pump Time?

    My numbers this morning (tf100 test kit):

    FC 6.5
    CC 0.5
    PH 7.5
    TA 100
    CYA 70

    I am running the pump 12 hours per day, with the SWG at 20% output. I want to lower my FC to 5. We've had the solar cover on a lot lately because of weather conditions and trying to keep leaves out of the pool. Would it better to dial down the output of the SWG some more, or should I change my pump time to something like 10 hours per day? Any suggestions would be greatly appreciated.
    IG 12' x 39' - 20k Gallons - Vinyl Lined - StaRite Cristal-Flo II 26" Sand Filter - Hayward SuperPump 1 hp - Dolphin Dynamic autocleaner - Lochinvar Energyrite gas heater - Aqua Rite SWCG T-15 - TF100 Test Kit - Skimlite Duallly 9016 pole (great pole)

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    Re: Turn Down SWG or Shorten Pump Time?

    You might need to do a little bit of each. With the cover on, remember that you are eliminating loss of FC by the UV route. I think that you may just need to experiement with things. Try reducing the pump run time and see how things look. Or, you can turn your SWG down a little more and see what changes that effects. Do one or the other rather than both at the same time to see what works best.

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    Mod Squad Bama Rambler's Avatar
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    Re: Turn Down SWG or Shorten Pump Time?

    If it were me I'd dial back the pump run time a bit. Reason being is that it would bring down your FC and also help the ole power bill a tad. The added benefit is that your pump will also last longer.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    mickey4paws's Avatar
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    Re: Turn Down SWG or Shorten Pump Time?

    Thanks so much for the replies. Great advice and I think I'll start with changing the pump's run time first. Our electric meter really moves when the pump is running, so any savings would be great.
    IG 12' x 39' - 20k Gallons - Vinyl Lined - StaRite Cristal-Flo II 26" Sand Filter - Hayward SuperPump 1 hp - Dolphin Dynamic autocleaner - Lochinvar Energyrite gas heater - Aqua Rite SWCG T-15 - TF100 Test Kit - Skimlite Duallly 9016 pole (great pole)

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    Re: Turn Down SWG or Shorten Pump Time?

    That's probably they best thing to do. 12 hours seems kind of long to me but then again, your pool water will give you the final word.

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    JasonLion's Avatar
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    Re: Turn Down SWG or Shorten Pump Time?

    Ideally, you want to adjust your pump run time to be as short as possible while still maintaing excellent water clarity and then adjust your SWG percentage to get the amount of chlorine you want.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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