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Thread: Raising PH for SLAMing

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    Join Date
    Apr 2015
    Location
    IL
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    Raising PH for SLAMing

    Hello all.

    I just added 120oz of Arm & Hammer Washing Soda to raise the PH so I can SLAM.

    I am not exactly quite certain how long to wait to see any results (or even for that matter how much to add).

    The PH measurement before adding any of the Washing Soda was the lowest on the scale.. And 3 hours after adding, it's still the lowest on the scale (6.8).

    I am trying to get this to level to start with the Bleach.

    Thanks!
    Pete
    Vinyl IG, 32,000 gallons, CircuPool 60,000g SWG, Hayward heater, Pentair TA-60/60D Sand Filter , Hayward Super Pump, TF-100 Test Kit

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    Re: Raising PH for SLAMing

    What is your TA?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    JasonLion's Avatar
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    May 2007
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    Re: Raising PH for SLAMing

    Any PH below 6.8 will be reported as 6.8 on the standard PH test. So you don't really know just how low your PH actually is. You just need to keep adding washing soda (or borax) in batches until your PH comes up to something a little more reasonable.

    After adding washing soda (or borax) you should give the pool one hour, with the pump running, before testing and continuing to adjust if needed.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Raising PH for SLAMing

    my TA was measured twice.. 70 yesterday and 60 today.

    I figured the ph was much lower than 6.8. The calculator told me to add this much, so that is what I started with.

    I'll add some more.

    Thanks!
    Pete
    Vinyl IG, 32,000 gallons, CircuPool 60,000g SWG, Hayward heater, Pentair TA-60/60D Sand Filter , Hayward Super Pump, TF-100 Test Kit

  5. Back To Top    #5

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    duraleigh's Avatar
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    Re: Raising PH for SLAMing

    That TA is fine. Keep bringing your pH up. Maybe a bit smaller dose on the next round(s)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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