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Thread: Brisbane Floods

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    Ray Mondo's Avatar
    Join Date
    Jan 2010
    Location
    Brisbane, Australia
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    22

    Brisbane Floods

    I suppose everyone heard about the devastating Brisbane Floods http://tinyurl.com/4dxfkk8. Fortunately where we live was not flooded, but many homes (let alone pools) in low lying areas were inundated with muddy water and will take a lot of work to recover.

    However, while we were free of inundation the exceptionally intense La Nina weather pattern has caused very heavy rainfall over most of Eastern Australia this summer and the pool chemistry has suffered. I finally got back to is yesterday and found, among other things FC = 0, CYA = 0.

    I added required chemicals and today's test comes up with:

    FC = 5+
    TC = 5+
    pH = 7.4
    TA = 50
    CH = 90
    CYA = 30
    Temp = 26C (OK, well it is summer here)

    My overall balance calculation comes up with 10.4 against a target of 11.0 - 11.2
    I'd appreciate advice on how best to improve the balance.

    Cheers
    48,000 litre outdoor in-ground pebble/plaster pool; EAQUIP self-cleaning saltwater chlorinator and controller; Waterco S-800 Sand Filter (420 litres per minute capacity); Aquanaut Pool-Vac cleaner.

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    Join Date
    Mar 2009
    Location
    Huntsville, AL
    Posts
    156

    Re: Brisbane Floods

    Have you found the link to the pool calculator? If not, here it is:

    http://www.poolcalculator.com/

    Hope that helps!
    Gordon
    27K gal, IG vinyl, 1.5 HP pump, 24" sand filter, Goldline Aqua Plus SWG

  3. Back To Top    #3
    susa's Avatar
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    Oct 2010
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    Deep South
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    Re: Brisbane Floods

    >> Temp = 26C

    all your numbers are very similar to mine except we only get up to 21C today and morning was 10C

    >> overall balance calculation comes up with 10.4 against a target of 11.0 - 11.2

    what's this balance calc ?


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    Join Date
    May 2007
    Location
    South Central NJ
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    3,192

    Re: Brisbane Floods

    You're light on alk and calcium. The alk will bring you up and the calcium and the calcium will help make the water less aggressive towards pulling calcium from the cement in the pebble finish.

    Scott
    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

  5. Back To Top    #5
    Ray Mondo's Avatar
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    Jan 2010
    Location
    Brisbane, Australia
    Posts
    22

    Re: Brisbane Floods

    Quote Originally Posted by susa
    >> Temp = 26C

    all your numbers are very similar to mine except we only get up to 21C today and morning was 10C

    >> overall balance calculation comes up with 10.4 against a target of 11.0 - 11.2

    what's this balance calc ?

    The balance Calc is a formula that came with my Palintest test kit. This seemed like the most suitable one available in Australia and gives me the info I need. It comes up with a balance value derived from CH, TA and pH.
    48,000 litre outdoor in-ground pebble/plaster pool; EAQUIP self-cleaning saltwater chlorinator and controller; Waterco S-800 Sand Filter (420 litres per minute capacity); Aquanaut Pool-Vac cleaner.

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