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Thread: Acid eating beauty....

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    Acid eating beauty....

    Hey everyone....second season with the pool now and have had nothing but crystal clear water from day one since becoming a TFP follower....

    Yet, I can't seem to get a handle on the pH. It wants to stay high all the time no matter how much acid I feed it. TA is right at 100 at the moment, but have always kept it in the 80-100 range. All other chemistry is normal range.

    This is a 42k gallon swg gunite/quartzscapes finish built last spring. Am I doomed to feeding this thing a gallon of acid per day for the rest of my life?


    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    That's a lot of acid. What are you trying to keep your pH at? My pool loves to be at 7.6-7.8. So, I let her hang out about 7.6 and try not to force her to be 7.2. What is your water source?

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    Re: Acid eating beauty....

    We have county water. Really really nice water. Trying keep pH under 8 but not having much luck.

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    You can try lowering your alkalinity Pool School - Lower Total Alkalinity it is a tad high. What are you testing pH with?

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    CJadamec's Avatar
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    Re: Acid eating beauty....

    You may want to consider adding borates to your pool there is a good thread explanation about how they can help Here

    Also the Borates why and how which is Here.
    Chuck-
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    Re: Acid eating beauty....

    MD,

    When you add MA are you shooting for 7.2 or 7.6? Most saltwater pools like their pH around 7.8...

    Lowering your TA, using the link that OTPirate provided above, works well for me...

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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    Re: Acid eating beauty....

    Thanks everyone. I will give the borates a try.

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    Quote Originally Posted by OTPirate View Post
    You can try lowering your alkalinity Pool School - Lower Total Alkalinity it is a tad high. What are you testing pH with?
    Testing with a pool master drop kit

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    Lower your TA down to 60-70 before borates. See what that does. Then, if you still struggle with pH, try the borates.

    You should get a good kit.....how old is yours?
    Dave S.
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    Re: Acid eating beauty....

    Quote Originally Posted by duraleigh View Post
    Lower your TA down to 60-70 before borates. See what that does. Then, if you still struggle with pH, try the borates.

    You should get a good kit.....how old is yours?
    Added two gallons of acid this morning and pH is now at 7.6 and TA at 80....

    Gonna add another gallon and see how that goes. The kit I have is less than 12 mos old.


    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    My pool is about the same age. The acid demand slowed down a lot once I got TA to 60. Also as said above it seems to like to ride at 7.8 so I only knock it down to 7.6 when adding acid.
    Completed April 2016: 22x36 3.5-5.5-4 Inground, 17,500 gallons, Aquapure SWG, Jandy 2hp Variable Speed, Jandy 460 Cartridge Filter, Polaris 280, Aqualink PDA4, Jandy Nichless LED lights, Diamondbrite color Steel Blue, Noche Travertine Coping & Deck

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    Re: Acid eating beauty....

    Good to hear. Maybe I won't need borates after all. Just don't want to put $8 worth of acid in it everyday. That will start to add up.

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    $3000 a year for acid and I will probably just let it ride.

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    My swg pool rides right around 7.8 like JR said above. I've been trying to reduce my TA from 140 to 70 by getting my ph to 7.2 and aerating. It's just not working for me. So I'm just moving on and living with it.



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    Re: Acid eating beauty....

    Ok, I'm terrible at colors, because that looks like 7.6 to me. I like to use a pH meter in conjunction with the pH test.

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    Re: Acid eating beauty....

    I read it as 7.6 as well OTPirate.

    MolarDog - start by lowering your TA to around 50 as recommended above. Do that in conjunction with keeping the pool around 7.6-7.8 and I think you'll find your acid demand drops quite a bit.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
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    Re: Acid eating beauty....

    Quote Originally Posted by triptyx View Post
    I read it as 7.6 as well OTPirate.

    MolarDog - start by lowering your TA to around 50 as recommended above. Do that in conjunction with keeping the pool around 7.6-7.8 and I think you'll find your acid demand drops quite a bit.
    +1 to lowering TA to 50 or 60.
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    Re: Acid eating beauty....

    Keep in mind your pool is also still kind of "new" and some will take a year or so to finish curing.

    Don't try borates until after your TA/pH have been stable a while. If you do it too early they become harder to manage if you need to change something.

    Maddie

    (and I know you didn't ask but... you need a FAS-DPD tester. So you can test chlorine >5ppm)
    Maddie :) 12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
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    Re: Acid eating beauty....

    Thanks everyone. Gonna go buy a pallet of acid from home Depot and conquer this TA....still reading 90 and pH has already crept back up to 8.2 as of this evening.

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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    Re: Acid eating beauty....

    And btw, I have Taylor test kits for every other parameter....salt, calcium hardness, fas-dpd.

    50x20 IG, quartscapes finish, 41k gallons , Autofill valve, Jandy pro series stealth 2 HP pump, Polaris PB4-60 cleaner, 4 cartridge filter (unknown make), Hayward Turbo cell 15 swg, Rheem 135k BTU heater/chiller, Hayward Pro Logic control panel, pool build complete 6-10-2016

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