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Thread: Does the CYA Reagent R-0012 go bad?

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    ozdiver's Avatar
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    Oct 2014
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    Spring, TX
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    Does the CYA Reagent R-0012 go bad?

    Got some odd results and cannot explain them so over to the experts...
    New plaster pool being started up over last 2 weeks.
    Checked this morning:
    FC 2
    pH 7.7
    TA 30
    CH 325
    CYA 0

    Added 64 oz Mutiatic Acid to start bringing up CYA
    Left it for a couple of hours

    pH 6.8
    CYA as near to 0 as I can tell.

    I filled to bottom of label, added R-0012 to top of label, shook for 30 sec or more.
    Slowly filled cylinder and I can still clearly see the black dot.
    Left it for a few minutes, still visible.
    Very little precipitate.

    The pH swing shows that the acid is there, but not showing up in CYA test.

    Could my R-0012 be bad, new kit and I have not got a reading with it yet?


    I'm obviously heading off to get some Borax to raise the pH to a more reasonable level.
    40k gal freeform, IG pebblesheen, 9'x'6' raised spa, 2-1/2 hp Whisperflo, 520 sq/ft cartridge, Legend w/ booster, Intellibrite 5g in pool @ spa, Rainbow 320 Chlorinator(retired),
    Mastertemp 400k BTU, 3x3 hp Whisperflo Swimjets, 2x2 hp Whisperflow for 15ton moss rock waterfall, Intelitouch Controller, 850 sq/ft Travertine deck, Gas/Wood firepit,
    Autofill, TF-100 test kit w/ SpeedStir

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    Join Date
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    St. Louis
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    Re: Does the CYA Reagent R-0012 go bad?

    MA lowers PH, which your test proves. You need stabilizer to raise CYA.
    25k gallon, IG gunite, Plaster/Pebblesheen (new in August of 2014), Sta-Rite 300lbs sand filter, TF100 Kit

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    Mod Squad Bama Rambler's Avatar
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    Re: Does the CYA Reagent R-0012 go bad?

    R-0012 is a calcium hardness reagent. The CYA reagent is R-0013. It's a pretty stable reagent so unless it's very old I wouldn't suspect that it's bad.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    ozdiver's Avatar
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    Oct 2014
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    Spring, TX
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    Re: Does the CYA Reagent R-0012 go bad?

    Sorry, meant 13.
    But using Muriatic rather than Cyanuric acid is my senior moment for the day.
    Thks
    40k gal freeform, IG pebblesheen, 9'x'6' raised spa, 2-1/2 hp Whisperflo, 520 sq/ft cartridge, Legend w/ booster, Intellibrite 5g in pool @ spa, Rainbow 320 Chlorinator(retired),
    Mastertemp 400k BTU, 3x3 hp Whisperflo Swimjets, 2x2 hp Whisperflow for 15ton moss rock waterfall, Intelitouch Controller, 850 sq/ft Travertine deck, Gas/Wood firepit,
    Autofill, TF-100 test kit w/ SpeedStir

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