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Thread: Scale deposits on 24' ag pool

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    Scale deposits on 24' ag pool

    Hi,
    I'm new to posting to this forum but have used the info for some time to maintain my 24'x 52" deep ag pool. This year after a winter of neglect, I emptied and refilled my pool with water from my well with a water softener on it. Before refilling, I failed to remove all of the scale deposits on the walls of the pool and am now wondering what to do.. I reduced the ph to below 6.5 and using the pool calculator and a cheap test kit these are my numbers

    FC 1
    PH below 6.8
    TA 40
    CH 120
    CYA 0

    the water is cloudy with a hint of green blue and and has dead algae floating in it-out of filter tank I am guessing. How do I proceed.....Want the scale off......will keeping the ph down eventually eat it off and reabsorb into the water? Or should I balance and add chemical to remove? Can i balance, keep scale and wait it out? Should I use a flocculant to sink debris?

    I know its alot but.....thx a million for the help...........have read lots of posts but not specific to my prob.
    Saundra
    30' Above Ground 18,000 gallons, Sand Filter, 1.5 hp Jacuzzi Pump

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    frustratedpoolmom's Avatar
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    May 2007
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    Re: Scale deposits on 24' ag pool

    Have you tried brushing the walls with a nylon bristle brush? Don't use a floc.
    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

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    JasonLion's Avatar
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    Re: Scale deposits on 24' ag pool

    Sometimes you can simply scrape scale off of a vinyl liner, use something that isn't sharp like a plastic pancake turner. The vinyl has a little flex to it, while the scale doesn't, so usually they can be separated.

    If you keep the PH very low for long enough, eventually all of the scale will redissolve into the water. However, the low PH will shorten the lifetime of the liner, and if you have a heater with a copper heat exchange coil you definitely don't want to leave the PH low for very long as low PH will dissolve the copper into the water.
    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: Scale deposits on 24' ag pool

    thx for the replies..............no I do not have a heater.......so copper not an issue.............will try pancake turner............have tried plastic bristle brush............just after 24 hours seems to loosening some with fingernail...since it is cool may leave ph alone for moment....know it won't balance but can I shock it to keep algae from growing.....have added chlorine but not cya yet.....didnt know how effective it would be since have knocked ph down so low.........will continue to filter out dead algae and try again begginning of next week unless get better advice here
    30' Above Ground 18,000 gallons, Sand Filter, 1.5 hp Jacuzzi Pump

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    frustratedpoolmom's Avatar
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    May 2007
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    Re: Scale deposits on 24' ag pool

    Adding chlorine will slightly increase the PH but I don't think it will be enough to reduce the effects of loosening the scale. I honestly think you should tackle one thing at a time though - work on the scale for a few more days and then adjust the ph/TA, CYA and begin shocking next week.
    Good luck!
    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

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    Re: Scale deposits on 24' ag pool

    sounds like a plan...............will post update next week
    30' Above Ground 18,000 gallons, Sand Filter, 1.5 hp Jacuzzi Pump

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