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Thread: DPD Powder

  1. Back To Top    #1

    DPD Powder

    Can DPD powder (perhaps the concentration) change over time.

    I shocked my pool on opening and the pool stayed at shock level despite being very green for 3 hours (before hiting the sack). Pool looks better in the morning. I didn't test before heading to work so no numbers besides last night -

    CYA - 45
    PH - 8.2
    FC - 17

    Always a distinct possibility I am doing something wrong...

  2. Back To Top    #2
    dmanb2b's Avatar
    Join Date
    Apr 2009

    Re: DPD Powder

    If the water turned pink, it should be fine. Count each drop of R-0871 as 0.5ppm if using a 10ml sample
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

  3. Back To Top    #3

    Re: DPD Powder

    It did go pink.

    Thanks for the quick reply! TFP is the best!

  4. Back To Top    #4

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: DPD Powder

    Yeah, the DPD powder will stay good for a will start to turn darker and darker from almost day one but as long as it turns the sample pink/rose, the test is valid.

    You didn't ask but you need to get your pH down.....sooner rather than later
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

    Re: DPD Powder

    PH is tonight.

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