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Thread: Need some advice on PH and T/A

  1. Back To Top    #1

    Join Date
    Aug 2012
    Location
    Brisbane , Australia
    Posts
    54

    Need some advice on PH and T/A

    Hi
    My latest figures for a start

    SWG

    FC 2
    CC .5
    PH 7.8
    TA 170
    CH 240
    CYA 85


    My PH is where I want it but my T/A needs to be at 60 - 80. If i use acid to lower my T/A then My PH will alter as well. Do I then use soda ash to raise my PH again. Pool calculator says to add 3 litres of acid to bring my PH down to 7.0

    Cheers
    Brad
    19,000 gallons
    Zodiac Tri Series SWG
    Hayward S310T Sand Filter
    Poolrite SQI 600 pump.
    IG Concrete, quartzon surface
    Built 1997

  2. Back To Top    #2

    Re: Need some advice on PH and T/A

    Did you try using the Pool Calculator (PC) ? I'm sure one of the experienced peeps here will walk you thru getting on track... I'd help you, but I'm VERY new. Your FC is very low in my newbie opinion..

    What do you normally chlorinate with? Bleach? Pucks?
    Helen
    Dallas Area, 16,000 gal IG, Easytouch 8 computer, Intelliflo 3HP Variable Speed pool pump, Pentair Smart Pump 4x160, Pentair 3/4 HP Booster Pump, FNS 60 DE 60, Mastertemp 400, Rainbow 320, Dual Timer w/ freeze protection, Intellichor SWG, TF100 Test Kit, POOL FILLED AUG 3, 2012, ORDER YOUR TF100 KIT FROM http://tftestkits.net
    http://www.troublefreepool.com/under...ie-t49936.html

  3. Back To Top    #3

    Join Date
    Aug 2012
    Location
    Brisbane , Australia
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    Re: Need some advice on PH and T/A

    My pool has a Salt Water Generator.

    I haven't tested till now as I just got a new test kit. Got the chlorinator on Boost ATM
    19,000 gallons
    Zodiac Tri Series SWG
    Hayward S310T Sand Filter
    Poolrite SQI 600 pump.
    IG Concrete, quartzon surface
    Built 1997

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    duraleigh's Avatar
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    Apr 2007
    Location
    Sebring, Florida
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    Re: Need some advice on PH and T/A

    Lower pH - muriatic acid (also lowers TA)

    raise pH - Borax....has little affect on TA

    Lower TA - use aerate/acid method described in Pool School

    Raise TA - add baking soda (has little affect on pH)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

    Join Date
    Aug 2012
    Location
    Brisbane , Australia
    Posts
    54

    Re: Need some advice on PH and T/A

    Thanks

    I've put in the chlorine and acid as per The Pool Calculator and I'm running the waterfall to aerate. See hoe she looks in the morning.
    Brad
    19,000 gallons
    Zodiac Tri Series SWG
    Hayward S310T Sand Filter
    Poolrite SQI 600 pump.
    IG Concrete, quartzon surface
    Built 1997

  6. Back To Top    #6

    Join Date
    Aug 2012
    Location
    Brisbane , Australia
    Posts
    54

    Re: Need some advice on PH and T/A

    Update this morning.
    FC 5
    PH 7.2
    T/A 140

    The PH has dropped as per TPC. But the TA has only gone to 140. Do I give it more time as I don't really want to drop my PH much more?
    19,000 gallons
    Zodiac Tri Series SWG
    Hayward S310T Sand Filter
    Poolrite SQI 600 pump.
    IG Concrete, quartzon surface
    Built 1997

  7. Back To Top    #7

    Re: Need some advice on PH and T/A

    brad,
    did you add bleach to raise your chlorine?

  8. Back To Top    #8

    Join Date
    Aug 2012
    Location
    Brisbane , Australia
    Posts
    54

    Re: Need some advice on PH and T/A

    I added liquid chlorine as per the dose on The Pool Calculator and left my SWG going for a while
    Thanks
    19,000 gallons
    Zodiac Tri Series SWG
    Hayward S310T Sand Filter
    Poolrite SQI 600 pump.
    IG Concrete, quartzon surface
    Built 1997

  9. Back To Top    #9

    Re: Need some advice on PH and T/A

    Quote Originally Posted by Blue114
    Update this morning.
    FC 5
    PH 7.2
    T/A 140

    The PH has dropped as per TPC. But the TA has only gone to 140. Do I give it more time as I don't really want to drop my PH much more?
    Yes, give it time. A TA of 140 is not too bad. Just keep the pH between 7.3 and 7.5, and the TA will slowly come down. As the TA comes down, I would slowly begin raising the pH target to about 7.6 to 7.8.

  10. Back To Top    #10

    Join Date
    Aug 2012
    Location
    Brisbane , Australia
    Posts
    54

    Re: Need some advice on PH and T/A

    Hi Mate,

    Just reread the instructions for dropping the TA and it is a cycle of acid and aeration till you get the desired reading. Sounds good .and that's what I'll do.

    Cheers
    Brad
    19,000 gallons
    Zodiac Tri Series SWG
    Hayward S310T Sand Filter
    Poolrite SQI 600 pump.
    IG Concrete, quartzon surface
    Built 1997

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