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Thread: Chlorine testing with yellow treat

  1. Back To Top    #1

    Join Date
    Jun 2010
    Location
    Pensacola FL
    Posts
    40

    Chlorine testing with yellow treat

    Hey All, have been lurking for a couple weeks so I thought I would as a question.

    I recently moved to a new house with a pool and stated with the pool store. Trichlor tabs and they wanted me to use No Mor problems each week. There was a bottle of yellow treat the old owner left so the pool store said I could use a 1/4 cap each week. Well, I have stopped the trichlor and changed over to BBB . My question is will the sodium bromide I've been putting in significantly affect the chlorine reading on my K-2006. I was wondering this b/c my readings and the pool stores are different on most things. They appear to be testing by measuring optical density as they always use cuvettes and put them in a reader.

    My results
    FC 4.5
    CC 0
    pH 7.4
    TA 120
    CYA 60
    CH 250
    Overnight FC loss .5

    Pool Store (I got a gold star on my sheet)
    TC 2.5
    CC 0
    pH 7.7
    TA 90
    CYA 75
    CH 250

    I'm in florida and it's been 95 for the last week. I seem to loose about 2-2.5 ppm chlorine each day, but my pool is screened in and there are a lot of trees.

    So back to my question. Do you think the sodium bromide is affecting the chlorine readings? and/ or increasing my chlorine demand?
    14.5 K inground vinyl
    1hp pump
    sand filter
    Taylor K-2006
    Aquarite SWG
    P'cola FL

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

    Re: Chlorine testing with yellow treat

    I don't think it has anything to do with the sodium bromide. It is quite common for some FC to be "lost in transit" on the way to the pool store.

    Bromine and chlorine will both show up on all of the common FC tests, but even if some of your "chlorine" is actually bromine, it should still behave int the same way, giving the same final level, on all of the different test approaches.
    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
    Jun 2010
    Location
    Pensacola FL
    Posts
    40

    Re: Chlorine testing with yellow treat

    Thanks for the answer. Does a 1/4 cap of yellow treat a week hurt anything or does it just add to the cost. I'm going out of town for 9 days and had planned on bringing the chlorine up to shock level and throwing in 4 pucks in the chlorinator (which lasts about 6-7days). I was thinking of throwing in a 1/4 cap of sodium bromide before I left to cover my bases.
    14.5 K inground vinyl
    1hp pump
    sand filter
    Taylor K-2006
    Aquarite SWG
    P'cola FL

  4. Back To Top    #4
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,965

    Re: Chlorine testing with yellow treat

    You don't need to use yellow treat at all.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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