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Thread: test numbers - what do they mean?

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    test numbers - what do they mean?

    Hi!

    I've been doing BBB since last summer and my pool looks great. My husband (who's a bit of a geek) has taken an interest in the testing and wants to know what the numbers mean. I can't explain it, I just feed the numbers into the pool calculator and do what it tells me to do. Will someone explain what the numbers mean? The pool numbers are out of whack this week and I'm adjusting for it. But why am I doing what I'm doing? You idiot-proofed BBB so I don't have to have a deep understanding, but my husband wants to understand the underlying chemistry. Thanks!!

    FC 1
    CC .5
    TC 1.5
    pH 6.8
    T/A 30
    CH 50

    Chris and Ed

    33000 gal inground concrete and plaster pool (1974), original PacFab PF-50 sand filter with stainless steel, centrifugal pump
    Note: pool, pump and filter leak a bit so we replace a little water daily from a 35 foot well that is used only for pool and irrigation of lawn and garden...well water is untreated (not chlorinated or filtered).
    20x40 40K gal concrete pool, GE pump, sand filter, 40 years old (approximately)

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    Re: test numbers - what do they mean?

    PS

    He's read Pool School, but wants to understand more.

    Chris
    20x40 40K gal concrete pool, GE pump, sand filter, 40 years old (approximately)

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: test numbers - what do they mean?

    Take a look at the ABCs of Pool Water Chemistry. That has a good overview.
    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: test numbers - what do they mean?

    I don't think BBB is idiot proofed either because without knowing what those numbers mean you can't do it.
    10,000 gallon
    Viking Freeform Fiberglass Inground Pool. FNS Plus DE Filter Pentair Challenger .75hp pump

    NC KANSAS44

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    Re: test numbers - what do they mean?

    Then why does it work for me??
    20x40 40K gal concrete pool, GE pump, sand filter, 40 years old (approximately)

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,418

    Re: test numbers - what do they mean?

    To get back to your original topic, why don't you ask your husband to come on to the forum and ask what he wants.....he'll find this a very friendly place.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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