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Thread: New pebble finish and chlorine levels

  1. Back To Top    #1

    Join Date
    May 2013
    Location
    Allen, TX
    Posts
    110

    New pebble finish and chlorine levels

    Hello

    I am about 2.5 weeks into a new pool finish startup. It is a Wetedge Satin Matrix pebble finish. The pool builder who I contracted did the startup. We had tons of plaster dust the first two weeks which I thought was odd given it is a pebble finish. They basically added acid to target ph of 7 and tons of sequestering agents.

    The pool eventually cleared up and was good for a few days. I was monitoring ph and adding pucks for chlorine and cya. The builder added a few pounds of stabilizer and the cya level is around 20.

    Now this weekend the pool started getting cloudy. The pool builder recommended a power 60 algaecide product which I added. I have been worried about the chlorine levels since it is supposed to be 93 today. I was adding some calcium hypochlorite (power powder) to the skimmers but I couldn't get a FC level above 1 during the day. Last night I went out and bought bleach, used pool math and added the 121oz bottle. That yielded these numbers


    FC 3.6
    CC 1.2
    PH 7.4
    TA. 70
    CH 170
    CYA 20 (store test)

    i did the OCLT since I thought something was in the water that wasn't plaster dust.

    This morning the numbers were

    FC 2.4
    CC .2

    Ph 7.0 since I added acid last night pool is constantly rising right now

    My question is since it is a new surface and I shouldn't go to slam levels, where should I target the FC level? I have been shooting for 4 ppm since that safe for people and the finish but I would really like a clean looking pool. It is much clearer this morning so maybe I am on the right track.
    ~15K gal, IG gunite with new Wetedge Satin Matrix Pebble Finish installed mid 04/14, 1 HP Pentair Challanger pump, Sta-rite System 3 300 sqft cartridge filter, G3 cleaner

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: New pebble finish and chlorine levels

    Raise FC to around 10 as soon as the sun is off the pool in the evening, and test and adjust at least once more later in the evening (and preferably two or three times).
    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

  3. Back To Top    #3

    Join Date
    May 2013
    Location
    Allen, TX
    Posts
    110

    Re: New pebble finish and chlorine levels

    Quote Originally Posted by JasonLion View Post
    Raise FC to around 10 as soon as the sun is off the pool in the evening, and test and adjust at least once more later in the evening (and preferably two or three times).
    Is that okay to go to slam levels with a 3 week old surface?
    ~15K gal, IG gunite with new Wetedge Satin Matrix Pebble Finish installed mid 04/14, 1 HP Pentair Challanger pump, Sta-rite System 3 300 sqft cartridge filter, G3 cleaner

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: New pebble finish and chlorine levels

    There is some disagreement about waiting either 2 weeks, or 4 weeks, before shocking. Being conservative we can call it not 100% safe.
    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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