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Thread: Reducing pH and TA

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    Join Date
    Jun 2016
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    Ithaca, New York
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    Reducing pH and TA

    Hello! Our pH is creeping up and our TA is off the charts. Pool math says to add Buame muriatic acid pr dry acid. We have a pool store product called pH reducer - is that the same thing? That is all the store had (they don't sell muriatic acid. If it's not the same thing, how do I know how much to add? Thanks all.

    FC 5 (before adding bleach)
    CC 0
    pH 8.0
    TA 200
    CH 250
    CYA 80

    Liz
    Intex round pool, 18' x 48"
    Cartridge filter, 1500 gph
    SWG
    Well water
    Full sun

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    BobbyR's Avatar
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    Jun 2013
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    Re: Reducing pH and TA

    I don't know how much of the pH reducer to add but have you tried Home Depot for Muriatic acid? That's where I get mine. It's in the paint department.
    Lagoon 40x22, Vinyl, 27,000 gal, 1HP WhisperFlo Pump, Pentair 60 gpm Sand filter, Hayward Brominator (used for chlorine pucks only when away), Rheem gas heater, Dolphin M4 Robot
    Waterfall on separate dedicated pump

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    AimeeH's Avatar
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    Re: Reducing pH and TA

    The PH Down product you have is likely dry acid. Can you look at the active ingredient?

    Muratic acid is found at big box stores like lowes and Walmart in the paint section. Yep. The paint section.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    Catanzaro's Avatar
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    Re: Reducing pH and TA

    Can you please advise on how your TA became so high? Is it from the well water? If not, then reducing your PH every few days or each week will lower your TA. This process will take some time until your pool finds the best combination. I had to go from 140 down to 70 before my PH stabilized. What really helped was the rain and snow from this past winter. I pumped it back into the pool. This year, after the 3rd addition of MA, the PH finally stabilized.

    Muriatic Acid is really not that hard to work with. A few precautions:

    1) Wear a long sleeve sweatshirt
    2) Wear thick gloves
    3) Wear a breathing mask and eye protection

    If you feel that this will be an every week process, then take a few strong Pellegrino green small bottles and fill each up with MA. It is easier to work with a set amount, but one bottle should be able to reduce your PH from 7.8 to 7.2 and then you can repeat the cycle when needed. Always, and I repeat Always do any type of MA additions, etc. outside in the fresh air. Pouring out of a small bottles is easier to do. Always pour in front of a return while pump is running for at least 3-4 hours. Store in a very safe place away from children and animals.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    Re: Reducing pH and TA

    I really have no idea how it got so high. It's been high since we started testing. Have had no time to work on it yet, hoping to get to it this week.
    Intex round pool, 18' x 48"
    Cartridge filter, 1500 gph
    SWG
    Well water
    Full sun

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    Catanzaro's Avatar
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    Re: Reducing pH and TA

    Quote Originally Posted by Lrinaldo99 View Post
    I really have no idea how it got so high. It's been high since we started testing. Have had no time to work on it yet, hoping to get to it this week.
    If possible, please test your fill water so at least you have an idea. Outside of this, please add either MA or dry acid to lower the PH to normal ranges. Once your PH is adjust to your preference, please track the PH and determine how many days before it creeps back up again. Then, adjust one more time.
    14,700 gallons IG Pool Vinyl Liner - Octal Circulation System
    Hayward Pro-Series 350 LB. Sand Filter Model # S270T - 2" Plumping
    Hayward CL2002 Chlorinator - Hayward Super Pump 2 HP Model # k48m2n111
    Hayward AQR9 SWG 25K Salt Cell & TF-100 Test Kit + Speed Stir
    Gulfstream HE125RA - 117K BTU Heat Pump - Date of Build is 11-2013

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    VinDeeLoo's Avatar
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    Re: Reducing pH and TA

    Our fill water has a very high pH and TA. We started with a TA of 310. I now have it down to 210 with MA.
    VinDeeLoo
    7600 gallons ~ AG ~ Summer Waves Cartridge C Filter ~ using pump that came with our Summer Waves 18 x 48 pool ~ Taylor K-2006 (SpeedStir & Sample Sizer) ~ no well water or water restrictions

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