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Thread: RO treatment instead of drain and fill?

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    RO treatment instead of drain and fill?

    I am considering having my pool RO filtered instead of draining and filling. My reasons are a CH level over 1500 and salt level (as measured by pool store tests) of about 7000. I have been using liquid chlorine for about 3 yrs and our fill water here in east Mesa, AZ is extremely hard. Our temperatures are hovering at the 90-100 degree range so to get things back to respectable levels, I would have to do a bunch of partial drains and backwashes. The RO service is pricey but should solve my problem. Anyone have experience with the RO filtering?

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    Join Date
    May 2011
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    Re: RO treatment instead of drain and fill?

    I've used RO filtering, but not in pools- it works great, but unsure of costs...
    I used to maintain a unit supplying drinking water to 1200 people, lots of maintenance- but you're paying someone to do that, not installing your own unit for longtime use, right?
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

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    duraleigh's Avatar
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    Re: RO treatment instead of drain and fill?

    What is the CH of your fill water?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    JasonLion's Avatar
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    Re: RO treatment instead of drain and fill?

    RO works very well. Remember that it takes everything out, FC, TA, CH, CYA, Salt, Borate. By the time you are done you will actually need to raise a few of the levels to get back to balanced.
    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: RO treatment instead of drain and fill?

    I had an RO treatment done to my pool. Worked great. As Jason said you will need to reset levels.
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

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    Re: RO treatment instead of drain and fill?

    Cancel my last post regarding tap water CH due to stupidity! I was doing drops times 100. The pool readings still stand so anyone else with RO info please share.

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    Re: RO treatment instead of drain and fill?

    After reading duraleigh's question I tested my tap water and for some reason multiplied by 100 instead of 10. Much to my embarrasment, I panicked and posted (at least I thought I did) about my unbelievable results. Good thing it's Sunday or I would have been calling the city Water Dept..

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    Butterfly's Avatar
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    Re: RO treatment instead of drain and fill?

    Quote Originally Posted by Bobba
    After reading duraleigh's question I tested my tap water and for some reason multiplied by 100 instead of 10. Much to my embarrasment, I panicked and posted (at least I thought I did) about my unbelievable results. Good thing it's Sunday or I would have been calling the city Water Dept..
    I'm sorry you are having problems, but your post made me laugh out loud!
    I guess the water department is glad it is Sunday, too
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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