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Thread: Metal Staining w/ CYA at 0, What to do first?

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    Join Date
    Jun 2013
    Location
    Bethel, CT
    Posts
    11

    Metal Staining w/ CYA at 0, What to do first?

    Hello,

    First of all I love TFP!! You guys have helped me a ton since i moved in a year ago and am totally new to pools.

    So, this year the opening went fine cleaning the leaves out and vacuuming to start. Water looked good and i started to balance. TA was low, ph was good and the CYA was at 0, so I started balancing TA first.

    I brought up the TA with baking soda, 13lbs worth and got up to a TA of 70. PH went up to 7.7. Next I added bleach to shock level thinking that this would be ok.

    The next morning after adding the bleach i started seeing light brown staining on the steps, skimmer boxes, and return eyeballs. I left it for a few days and the stains have darkened. I tested it with vitamin c pills and it came right off. So now i am planning on doing the AA treatment.

    Question: my test results are below and with a CYA of 0 what should i do first? AA treatment, bring up CYA, and then balance TA & PH or bring up CYA first?

    ph 7.7
    FC .5
    CC 1.5
    TC 2
    TA 70
    CH 120
    CYA 0

    Thanks and appreciate your help!!
    30,000g In-ground Vinyl, 8.5 - 3ft L-Shape
    HO Smith 1HP Pump, Hayward DE EC75 Filter, Dolphin Nautilus Pool Vac
    Diving board & Slide

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

    Re: Metal Staining w/ CYA at 0, What to do first?

    Get everything balanced and working perfect, including CYA, before attempting an AA treatment. You also need to take care of that CC level.
    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 2013
    Location
    Bethel, CT
    Posts
    11

    Re: Metal Staining w/ CYA at 0, What to do first?

    Ok, will do.

    One other question, i have the tf-100 kit that i bought last year. how long should the r-840 powder be good for? the only reason i ask is that when i added the heaping scoop per the directions it was very very light pink. maybe because there is hardly any chlorine?

    thx
    30,000g In-ground Vinyl, 8.5 - 3ft L-Shape
    HO Smith 1HP Pump, Hayward DE EC75 Filter, Dolphin Nautilus Pool Vac
    Diving board & Slide

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

    Re: Metal Staining w/ CYA at 0, What to do first?

    The TF100 reagents will generally last two seasons if you store them correctly (cool and dark place with a steady temperature above freezing).
    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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