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Thread: dumb chlorine question

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    dumb chlorine question

    hi, question on the pool calculator:
    I am bringing my CYA up from 45 to 60. When I put 60 in the PC I get that the minimum FC =3, but then the next 2 boxes give a range of 5 (min) and 9 (max). Which numbers should I be aiming for?
    thanks
    30000 gallon inground gunite pool
    Intelliflo ic-60 SWG, pentair tagelus sand filter, 1.5 hp whisperflo pump, tf 100 test kit,
    2 kids(tl), 1 mini-dachshund/lab mix(t),
    Central Illinois

  2. Back To Top    #2

    Re: dumb chlorine question

    oops, just found the answer.
    with a SWG, I aim for the 1st number (3) the 5-9 is for pools with no SWG, correct?
    thanks!
    30000 gallon inground gunite pool
    Intelliflo ic-60 SWG, pentair tagelus sand filter, 1.5 hp whisperflo pump, tf 100 test kit,
    2 kids(tl), 1 mini-dachshund/lab mix(t),
    Central Illinois

  3. Back To Top    #3
    Optica's Avatar
    Join Date
    Jul 2011
    Location
    Southern California
    Posts
    70

    Re: dumb chlorine question

    correct

    For a pool size of 30K gallons and CYA of 60:
    it recommends total FC goal of 3-9 to maintain sanitation. For SWG (salt water chlorine generators) it recommends a FC of 3 but it also shows the normal min, max chlorine levels for non salt pool of FC 5 and 9.

    SWG's usually run on the lower end of the recommended range. You want to hit FC of 3
    ___________________________________________________
    12,000 Gal IGP, Gunite/Plaster, Pentair DE & Pump, Heliocol Solar, K-2006, BBB'd & Borated.

  4. Back To Top    #4
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: dumb chlorine question

    For SWG w/60 CYA: Min 3, Target 4

    pool-school/chlorine_cya_chart_shock

    Don't drop below 3 FC.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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