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Thread: New fill - Test with results with questions

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    Join Date
    May 2014
    Location
    NYC
    Posts
    47

    New fill - Test with results with questions

    Had new liner put in and filled it 2 days ago, the results of new fill were:

    FC 0
    CC 1
    pH 7.2 (or less hard to tell w colors)
    TA 40
    CH < 50
    CYA 0, put enough CYA in a sock to bring it up to 30

    I shocked the pool during the day, raised FC to about 5 and I passed to overnight test this morning. CC is less than .5 and I only lost .5 of FC

    Now I want to tackle the pH and TA.

    The pool came with a product called pH+ but I don't want to use it because it will add sulfer to my pool and I will instead go buy Borax. Is this wise?

    Also I will raise my TA by adding baking soda.

    Raise pH ~ 7.5 1st, then raise TA to 90.

    Am I on the right track?
    12' x 18' Oval Above Ground Pool (buried 2')
    Manufacturer states ~5,000 gallons
    Pentair CC75 Cartridge Filter System 1-HP Opti-Flo Pump
    Bleach Chlorination Method
    Aquabot Junior Vacuum

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    Join Date
    May 2013
    Location
    Bay City, Michigan
    Posts
    283

    Re: New fill - Test with results with questions

    Looks good. Using pool math, the amount of baking soda you will need to go from 40 to 90 TA, will raise your PH a little....so I would recommend raising TA first, then retest PH before adding borax.
    12500 gallons, 24 foot round above ground
    Hayward Sand filter, Pentair OptiFlo 1HP 2-Speed pump

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: New fill - Test with results with questions

    Because the tendency is for most pools to have a slow rise in pH naturally, I would leave pH alone.

    I would raise the TA using baking soda to about 90

    Of course, your FC is far more important so don't lose track of it.....keep it around 2 - 4 all the time. You will need to replenish it daily.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    May 2014
    Location
    NYC
    Posts
    47

    Re: New fill - Test with results with questions

    Thanks. I will focus on TA and leave pH for a few days.

    I will maintain my FC daily using liquid bleach
    12' x 18' Oval Above Ground Pool (buried 2')
    Manufacturer states ~5,000 gallons
    Pentair CC75 Cartridge Filter System 1-HP Opti-Flo Pump
    Bleach Chlorination Method
    Aquabot Junior Vacuum

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