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Thread: Should I add liquid chlorine or let SWG handle it?

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    Join Date
    May 2010
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    Arizona
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    Should I add liquid chlorine or let SWG handle it?

    Hello,

    I have installed a new SWG - Hayward Swimpure Plus with t-15 salt cell. Today morning I did start it for the first time.
    My SWG is set at 50%. The salt level is currently at 3200 ppm. This tested by using the Aquachek test strips. The instant salinity indicator on the diagnostics display on the Swimpure plus equipment is at -3400.

    FC is at 1. (color matches 1-2 on the comparator and is showing 1 based on the chlorine drop test)
    The question is - should I add liquid chlorine to get FC up to 3 - 5 ppm?

    My Other numbers:

    TA - 100
    CYA - 70
    pH - 7.2
    CH - Not tested yet - but should be high.

    I am thinking that the lower pH should rise and bring down the TA to an optimal level of 60-80 ppm. I have a water feature through which the water does flow back to the pool and gets aerated in that process. This should help me in getting the TA down. Please do let me know if my approach is wrong.

    All of the test results are based on TFTestkits. I re-ordered the chemicals for this season.

    Thanks in advance.

    ifmx4ever
    IG Pebble Sheen Pool - 12,300 gallons
    Pentair Triton-II Sand Filter,
    Hayward Super II Pump - Model K48N2N104, 2.0 HP motor
    Hayward Swimpure Plus SWG with T-Cell 15
    The Pool Cleaner 2 wheel connected to a separate suction line

  2. Back To Top    #2
    Charlie_R's Avatar
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    May 2013
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    Mexico, MO
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    Re: Should I add liquid chlorine or let SWG handle it?

    Yes, add LC to bring your level up to your target. The SWG can't do it on it's own, without shortening it's life a bit.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Re: Should I add liquid chlorine or let SWG handle it?

    Mentally prepare yourself for still having to add LC. Mine went lime green a few times before I figured it out.


    As far as setting goes you'll have to feel it out. After awhile you'll get it pegged down. Mine is happy at around 30% most of the time. It can vary with bather load and how much junk gets blown in from the wind storms.



    14,000 gallon IG plaster pool, Cartridge Filter

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    steveg_nh's Avatar
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    Oct 2013
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    Re: Should I add liquid chlorine or let SWG handle it?

    With colder temps too, it doesn't run all the time...keep that in mind. Mine doesn't kick on until water temp is at least 55.
    24'x40' 25k gal Imperial Mountain Pond IGP, full 28 mil VynAll Ocean Breakers liner. All Hayward system: 140k BTU HeatPro heat pump, 3/4HP single speed TriStar 2" Pump, DE6020 filter, AquaPlus Automation/Salt Chlorination, remote controls, ColorLogic 4.0 lighting. Polaris 280 w/PB4-60 BP. TF100 & K1766 test kits. Rinox Palazzo pavers and Spherik coping. Pool installed 9/2013, project completed 6/16/14.

  5. Back To Top    #5

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    Re: Should I add liquid chlorine or let SWG handle it?

    Aeration will increase your pH without increasing TA. It won't, however, decrease your TA at all!
    Pool size: 24000gal inground Vinyl-Taylor k-2006 and k-1766 test kits and-speed stir
    Intermatic P1353ME digital timer w/freeze sensor
    CircuPool Si-45 SWCG System
    Polaris 280 vacuum/Polaris PB4-60 boost pump
    Pentair IntelliFlo VS 3hp Pump--Pentair sand filter

  6. Back To Top    #6

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    May 2010
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    Arizona
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    Re: Should I add liquid chlorine or let SWG handle it?

    Uh oh.... I thought the pool calc said to reduce the TA - bring down the pH between 7.0 and 7.2 and to aerate. Have I misunderstood? If so what would be the way to reduce TA?
    IG Pebble Sheen Pool - 12,300 gallons
    Pentair Triton-II Sand Filter,
    Hayward Super II Pump - Model K48N2N104, 2.0 HP motor
    Hayward Swimpure Plus SWG with T-Cell 15
    The Pool Cleaner 2 wheel connected to a separate suction line

  7. Back To Top    #7
    aussieta's Avatar
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    Jan 2014
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    Langwarrin, Victoria, Australia
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    Re: Should I add liquid chlorine or let SWG handle it?

    you need to calculate your run time and percentage time using poolmath http://www.troublefreepool.com/calc.html to get your ppm chlorine added
    eg i have a 25 gram cell and 13,000 gallon pool, 4 hours at 50 percent equals 1ppm per day
    also for 75 cya your minimum free chlorine is 3.5ppm and your target should be 5.5 http://www.troublefreepool.com/conte...art-slam-shock
    you are about to turn green, dump liquid chlorine in NOW
    SWG inground peanut shaped eco-bright concrete pool
    50,000 litres 13,000 gallons
    Lincoln Salt Chlorinator, 25 gram cell Sand Filter with glass media
    Taylor K2006-C test kit, Taylor K-1766 salt test, Dolphin M500 pool cleaner
    are you taking care of your pool or is the poolshop taking care of you

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    Arizona
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    Re: Should I add liquid chlorine or let SWG handle it?

    Aussieta,

    Yes I did add LC and brought FC up to 5.
    IG Pebble Sheen Pool - 12,300 gallons
    Pentair Triton-II Sand Filter,
    Hayward Super II Pump - Model K48N2N104, 2.0 HP motor
    Hayward Swimpure Plus SWG with T-Cell 15
    The Pool Cleaner 2 wheel connected to a separate suction line

  9. Back To Top    #9
    Smykowski's Avatar
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    Sep 2011
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    Gurnee, IL (North Suburban Chi-town)
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    3,065

    Re: Should I add liquid chlorine or let SWG handle it?

    TA of 100 is fine for now, you can worry about it later. For now, concentrate on getting FC where it needs to be.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  10. Back To Top    #10

    Join Date
    Oct 2013
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    Chapin, SC
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    Re: Should I add liquid chlorine or let SWG handle it?

    Quote Originally Posted by ifmx4ever View Post
    Uh oh.... I thought the pool calc said to reduce the TA - bring down the pH between 7.0 and 7.2 and to aerate. Have I misunderstood? If so what would be the way to reduce TA?
    You use muriatic acid to bring down the pH which also reduces the TA, then aerate to bring the ph back up.
    Pool size: 24000gal inground Vinyl-Taylor k-2006 and k-1766 test kits and-speed stir
    Intermatic P1353ME digital timer w/freeze sensor
    CircuPool Si-45 SWCG System
    Polaris 280 vacuum/Polaris PB4-60 boost pump
    Pentair IntelliFlo VS 3hp Pump--Pentair sand filter

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