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Thread: FAS/DPD I doing something wrong?

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    kdubya815's Avatar
    Join Date
    May 2009
    Columbia, TN

    FAS/DPD I doing something wrong?

    I let my FC get too low a few days, so I am shocking I went to test my FC level, and when I put in the scoop of the powder, the water turned a pale pink. However, when I started adding the drops, the water started getting a stronger pink instead of clearing! I did use the OTO test to see what that showed and it turned very orange, which I understand means the CL is high. I have never had this happen and I have used the TF-100 kit for 3 seasons! What am I doing wrong? Or does that indicate a major problem? Thanks in advance!
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: FAS/DPD I doing something wrong?

    It indicates super high FC. Use 2 scoops of powder and see what you get.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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