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Thread: Add Muratic Acid and Wait to Aerate How Long?

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    john.esher's Avatar
    Join Date
    Jul 2015
    Havertown, PA

    Add Muratic Acid and Wait to Aerate How Long?

    So I went to pool school and determined that to lower my TA of 120, I need to lower the pH which will reduce the TA. I added Muratic acid in an amount suggested by pool math, and then right away turned my return jet toward the surface. I just measured pH and TA (about 5 hours after acid addition) and got roughly 7.0 and 120 respectively.

    Am I doing this correctly, or should I be waiting a few hours with the lower pH before turning the jet?

    Do my results seem appropriate and I just need to be a little more patient? Was hoping for a late afternoon/evening swim.

    Intex 18' x 52" AG with Sand Filter Pump & SWG (Model ECO15110) about 7,600 gallons tested with a K-2006-SALT.

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    Divin Dave's Avatar
    Join Date
    Oct 2013
    Longview, Texas

    Re: Add Muratic Acid and Wait to Aerate How Long?

    Hi John,
    you're doing it right. No need to wait on starting the aerating.

    As for testing, it takes about 30 minutes with the pump running to get a good test result. No need to wait several hours to test after you have added something.

    hope this helps,
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge. Experience- it's what's learned just after you needed it most !!

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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Add Muratic Acid and Wait to Aerate How Long?

    The TA and pH will lower at the same time when the acid is added. You can start aeration right away.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    bobodaclown's Avatar
    Join Date
    Apr 2011
    Murrieta, CA

    Re: Add Muratic Acid and Wait to Aerate How Long?

    Aerate. Jump in, get the kids jumping in.
    Last edited by bobodaclown; 08-01-2015 at 04:31 PM. Reason: Corrected post. Deleted incorrect information.
    Murrieta, CA. 15K (Est) pool/spa. Hayward Tristar SP3220EE 2.70HP pump, Hayward Swimclear Cartridge filter C4025 425sqft (PA106), Pentair Mastertemp 400 heater. TF-100/Speedstir

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    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Add Muratic Acid and Wait to Aerate How Long?

    From Pool School:

    It is actually the acid which lowers TA. Adding acid lowers both the PH and the TA. Then aeration raises the PH without changing TA.
    TA does not fall with rising PH. Only acid reduces TA.
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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