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Thread: 3 weeks away=no chlorine / Where should I start?

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    melbajr's Avatar
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    Question 3 weeks away=no chlorine / Where should I start?

    Latest test results:
    fc=0
    cc=0
    ph=7.5, can I trust this number?
    ta=70
    ch=100
    cya=40

    I'm not sure what numbers to trust or what I need to do 1st.

    Also, i backwash my filter every other week or so (low bather load) but i've never opened it to clean it out. Maybe I should start with that?
    Grecian 11,800 gal. IG vinyl, Pentair TA-60 sand filter, 1.5 hp Superflo, built in 2007, replaced vinyl & converted to Intellichlor IC-40 SWG in 2012 after we purchased home. TF-100 Testkit, SWG manufacturer recommends salt levels 2600-4500, ideal being 3400-3500. Polaris 180 vac.

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    melbajr's Avatar
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    Re: 3 weeks away=no chlorine / Where should I start?

    the chlorine/cya chart doesn't cover my low cya. should I raise that?
    Grecian 11,800 gal. IG vinyl, Pentair TA-60 sand filter, 1.5 hp Superflo, built in 2007, replaced vinyl & converted to Intellichlor IC-40 SWG in 2012 after we purchased home. TF-100 Testkit, SWG manufacturer recommends salt levels 2600-4500, ideal being 3400-3500. Polaris 180 vac.

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    Mod Squad kimkats's Avatar
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    Re: 3 weeks away=no chlorine / Where should I start?

    What does your water look like?

    If your pump was running for at least 30 mins. before you tested you can trust all of the numbers.

    If your water looks okay I would add some chlorine. If it is green I would start a SLAM (link below)

    http://www.troublefreepool.com/conte...ntain-shocking

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Mod Squad tim5055's Avatar
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    Re: 3 weeks away=no chlorine / Where should I start?

    Quote Originally Posted by melbajr View Post
    the chlorine/cya chart doesn't cover my low cya. should I raise that?
    To see other FC/CYA combinations not listed on the chart there is a LINK at the bottom with the raw number chart developed by chem geek. With CYA 40 your minimum CYA is 2.9 and your target is 4.6

    Kim asks the key question, how does your water look? If it is clear I would bring it up to at least 10 and do an Overnight FC Loss Test (OCLT) tonight just to make sure nothing is growing. If the OCLT is clear let the FC drift down to your target level.

    If it is cloudy, green or you fail the OCLT start a SLAM.

    How did FC get down to "0" if you have a SWCG?
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    melbajr's Avatar
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    Re: 3 weeks away=no chlorine / Where should I start?

    How did FC get down to "0" if you have a SWCG?[/QUOTE]

    I don't know, but it is also telling me that my salt is low.

    - - - Updated - - -

    water has a green tint, gonna start slam now!
    Grecian 11,800 gal. IG vinyl, Pentair TA-60 sand filter, 1.5 hp Superflo, built in 2007, replaced vinyl & converted to Intellichlor IC-40 SWG in 2012 after we purchased home. TF-100 Testkit, SWG manufacturer recommends salt levels 2600-4500, ideal being 3400-3500. Polaris 180 vac.

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    Mod Squad tim5055's Avatar
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    Re: 3 weeks away=no chlorine / Where should I start?

    Others will answer up (I don't have a SWCG) but I believe it shuts down when the salt goes low.

    Keep us posted on the SLAM and double check those salt levels.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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