Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 7 of 7

Thread: How low can pH go?

  1. Back To Top    #1
    Modawg2k's Avatar
    Join Date
    May 2013
    Location
    Phoenix, AZ
    Posts
    270

    How low can pH go?

    What's an acceptable level to have pH for a short amount of time? I'm lowering pH to lower my TA. I'm getting the pH down to between 7.0-7.2 and then raising with both my water feature and salt system. Is it ok that my pool sits at that pH range for a day or so while I let it naturally rise up when I run my pump at night..... or should I be running my pump all day to raise my pH faster?
    ~15k gallons, 3'-5'-4' Figure 8 Shape In Ground
    Wetedge Satin Matrix Interior (Pebble)
    Paramount In-floor System
    Pentair IntelliFlo VS 3050, Pentair Triton II TR100 Sand Filter
    Pentair Intellichlor IC40 SWG

  2. Back To Top    #2
    JoyfulNoise's Avatar
    Join Date
    May 2015
    Location
    Tucson, AZ
    Posts
    11,603

    Re: How low can pH go?

    Do you have metal in the pool (hand rails, heaters, etc)? If so, try to only go to 7.2. It's ok to sit at 7.2 for a while, just don't go lower.


    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

  3. Back To Top    #3
    Modawg2k's Avatar
    Join Date
    May 2013
    Location
    Phoenix, AZ
    Posts
    270

    Re: How low can pH go?

    No metal, only natural stone in some areas


    ~15k gallons, 3'-5'-4' Figure 8 Shape In Ground
    Wetedge Satin Matrix Interior (Pebble)
    Paramount In-floor System
    Pentair IntelliFlo VS 3050, Pentair Triton II TR100 Sand Filter
    Pentair Intellichlor IC40 SWG

  4. Back To Top    #4
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: How low can pH go?

    Matt is right, it's best to shoot low for 7.2. What do your other parameters look like normally? If you don't have some hardness in the water, the lower you go, the more threatening it is. That said, don't panic if you overshoot to 7.0 at some point.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  5. Back To Top    #5
    Modawg2k's Avatar
    Join Date
    May 2013
    Location
    Phoenix, AZ
    Posts
    270

    Re: How low can pH go?

    Quote Originally Posted by Patrick_B View Post
    Matt is right, it's best to shoot low for 7.2. What do your other parameters look like normally? If you don't have some hardness in the water, the lower you go, the more threatening it is. That said, don't panic if you overshoot to 7.0 at some point.
    I haven't done a hardness test lately but I can guarantee that the water is high in calcium. It always is here in the desert.
    ~15k gallons, 3'-5'-4' Figure 8 Shape In Ground
    Wetedge Satin Matrix Interior (Pebble)
    Paramount In-floor System
    Pentair IntelliFlo VS 3050, Pentair Triton II TR100 Sand Filter
    Pentair Intellichlor IC40 SWG

  6. Back To Top    #6

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: How low can pH go?

    Good morning! Put your city and state in your sig so we know what climate you're in.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  7. Back To Top    #7
    Modawg2k's Avatar
    Join Date
    May 2013
    Location
    Phoenix, AZ
    Posts
    270

    Re: How low can pH go?

    Quote Originally Posted by duraleigh View Post
    Good morning! Put your city and state in your sig so we know what climate you're in.
    Done, I added it to my profile
    ~15k gallons, 3'-5'-4' Figure 8 Shape In Ground
    Wetedge Satin Matrix Interior (Pebble)
    Paramount In-floor System
    Pentair IntelliFlo VS 3050, Pentair Triton II TR100 Sand Filter
    Pentair Intellichlor IC40 SWG

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •