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Thread: PH ?

  1. Back To Top    #1

    Join Date
    May 2013
    Location
    London Ontario, Canada 1hr NE of Detroit
    Posts
    5

    PH ?

    Hi all.
    Just did my first post in the "Intro" section.

    June 2nd 6pm. Overcast.
    FC 10.5
    CC .25
    TC 10.75
    PH 7.2
    TA 60-70
    CH- vinyl pool
    CYA 20
    Temp 64*F. ****Note have started using "Pucks" to raise CYA slowly.

    When I opened May 18th(2wks ago), "Mesh Lop-Lok cover" usual black-green swamp.
    Added 12% liquid chlorine up to 12ppm shock level. And kept there till OCLT and less than .5 CC. Pool was blue but could barely see deep end floor drain. Mistakenly let chlorine drop to maintenance level of 2-3ppm. Water tests were good with CYA a little low At 20-30. PH a little high at 7.8 Then after doing several searches here understood why maintain "Shock Level" till all 3 criteria met. (Including #3 Crystal clear water.) so return to "Shock Level". Slowly over last 4-5 days water clarity is improving daily.
    1st ? As noted above current FC is 10.5 and PH is 7.2 and 1wk ago FC of 2.5 with a PH of 7.8. What could have cause the change. Is it possible several inch's of rain caused the PH drop?

    2nd question. As per another website(B.P.'s)..upon opening, first raise PH to 7.8 ( I added 1 box 20 Mule Borax to get to PH 7.8'vs here (TFP) lower PH to 7.2 Which is correct ?
    .......could the addition of Borax contributed to the hazy water over the last 1.5 wks. I didn't mix with water? Just opened box and added to skimmer.

    Thanks Dave.
    35,000 gal. Vinyl Liner I.G. pool @6yrs old.
    Pump: Jacuzzi. 1.5 HP
    Filter: Jacuzzi Laser250 w/6way valve, 350 lb, 8hr turn-over.
    Mesh Lop-Lok Cover
    TF-100 Test Kit - Pool School - Pool Calculator - Chlorine/CYA Chart
    Always use skimmer socks!!! Aquabot Turbo T.

  2. Back To Top    #2
    Butterfly's Avatar
    Join Date
    May 2007
    Location
    South Carolina
    Posts
    10,045

    Re: PH ?

    Quote Originally Posted by Grumpybear
    Hi all.
    Just did my first post in the "Intro" section.

    June 2nd 6pm. Overcast.
    FC 10.5
    CC .25
    TC 10.75
    PH 7.2
    TA 60-70
    CH- vinyl pool
    CYA 20
    Temp 64*F. ****Note have started using "Pucks" to raise CYA slowly.

    When I opened May 18th(2wks ago), "Mesh Lop-Lok cover" usual black-green swamp.
    Added 12% liquid chlorine up to 12ppm shock level. And kept there till OCLT and less than .5 CC. Pool was blue but could barely see deep end floor drain. Mistakenly let chlorine drop to maintenance level of 2-3ppm. Water tests were good with CYA a little low At 20-30. PH a little high at 7.8 Then after doing several searches here understood why maintain "Shock Level" till all 3 criteria met. (Including #3 Crystal clear water.) so return to "Shock Level". Slowly over last 4-5 days water clarity is improving daily.
    1st ? As noted above current FC is 10.5 and PH is 7.2 and 1wk ago FC of 2.5 with a PH of 7.8. What could have cause the change. Is it possible several inch's of rain caused the PH drop?
    Pucks are acidic and will lower the pH

    2nd question. As per another website(B.P.'s)..upon opening, first raise PH to 7.8 ( I added 1 box 20 Mule Borax to get to PH 7.8'vs here (TFP) lower PH to 7.2 Which is correct ?
    Chlorine is more effective at lower pH.
    .......could the addition of Borax contributed to the hazy water over the last 1.5 wks. I didn't mix with water? Just opened box and added to skimmer.
    Maybe, but I doubt it.

    While using the tabs, keep close eye on pH.


    Thanks Dave.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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