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Thread: FC jumped after Borax

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    FC jumped after Borax

    FC has been running from 6.5 to 7 added BORAX Monday, tested today FC 10.5 . The question is this the norm, Shut my SWG off to let the cl fall off a little.
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    Melt In The Sun's Avatar
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    Re: FC jumped after Borax

    Borax won't affect your FC at all; perhaps your SWG is set too high.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    JasonLion's Avatar
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    Re: FC jumped after Borax

    Borax does slow the growth of algae. If you had a low level algae problem adding borax could have tipped the balance so that you finally killed off the last of the algae.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: FC jumped after Borax

    OK not sure what to do? FC this morning was a 10.5 no cc's, ph is 7.5, CYA is 60, my SWG is a Pentair ic40 I have it set as low as I can go and that is at 20%. with the pump running 14hr a day, off from 10am till 2pm then off from 8pm till 2 am. I know 10 and 11 FC is high but with with all the pollen and thing blowing of the trees I really need to be running my pump more, so give me some advice!!! Thanks Jeff.
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

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    Re: FC jumped after Borax

    turn your swg off until the FC comes down to your target level.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: FC jumped after Borax

    That is what i just did. Thanks, When It gets down to target level and I fire the SWG back up will it not go right back to 10 FC?
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

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    Re: FC jumped after Borax

    Once all the junk is finished falling from the trees, I think you can cut back your run time (I am currently doing 6 hours daily) and that will keep you from over-chlorinating.

    Short of that, you simply have to cycle off your SWG every other day or so until you find the best balance. Of course, you could reduce your CYA but that would be a last, poor option if it were my pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    JasonLion's Avatar
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    Re: FC jumped after Borax

    Simply turn down the percentage setting on the SWG.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: FC jumped after Borax

    Jason 20% is as low as I can go. What about adding a suntouch system , will that let me dial it down to a lower LVL say 8%?
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

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    Re: FC jumped after Borax

    Fishhunt, you need to figure out your turn-over rate to run time for that Intelliflo.
    40'x19' IG Diamond Brite 29K 4' Waterfall/Dive Rock FNS60 DE Inteliflo VS 2hp Whisperflo pumps Aqualogic(P4) SWG TF100 Tester


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    Re: FC jumped after Borax

    Quote Originally Posted by maxepr1
    Fishhunt, you need to figure out your turn-over rate to run time for that Intelliflo.
    How? Do I go about that.
    21x42 olympic sports pool
    18000 gal
    Intelliflo vs pump
    Pentair ic40 SWG
    Suntouch control
    TR100 Pentair sand filter
    Letro ledgen II pool cleaner
    Vinyl liner
    TF Test Kit's TF100

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    JasonLion's Avatar
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    Re: FC jumped after Borax

    Yes, any Pentair brand automation system will allow you to set the SWG percentages to any number between 0 and 100.
    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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