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Thread: What did my PH Rise?

  1. Back To Top    #1

    Join Date
    May 2007
    Location
    Staten Island NY
    Posts
    113

    What did my PH Rise?

    Hey guys, did a search but couldn't find an answer so her goes...

    I closed my pool last weekend . Brought my chlorine levels up to shock level and added algaecide 60. Although my PH was fine all season long ~7.4 it was greater than 8.5 when I was ready to put the cover on. Alkalinity was 110 (again all season long). The only thing I did different was add the algaecide.

    1- Would that cause the PH to rise significantly?
    2- Will it harm anything to leave it as is for the winter?

    Thanks in advance!
    -400 sq ft ingroung Fiji (straight back kidney) ~ 13,500 gallons - Vinyl Liner - 3 to 6 Feet
    -Hayward 1.5 HP Super Pump
    -Hayward Perflex DE Filter EC65A
    -Hayward H 250 Heater

  2. Back To Top    #2
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: What did my PH Rise?

    FC levels over 10 will make the PH read a false high.

    It should be fine....
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  3. Back To Top    #3

    Join Date
    May 2007
    Location
    Staten Island NY
    Posts
    113

    Re: What did my PH Rise?

    Thanks....I should have known that one!
    -400 sq ft ingroung Fiji (straight back kidney) ~ 13,500 gallons - Vinyl Liner - 3 to 6 Feet
    -Hayward 1.5 HP Super Pump
    -Hayward Perflex DE Filter EC65A
    -Hayward H 250 Heater

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