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Thread: Just had an R/O treatment done

  1. Back To Top    #1

    Join Date
    Jun 2010
    Location
    Phoenix, AZ
    Posts
    12

    Just had an R/O treatment done

    My CYA and CH levels were out of control on the pool I inherited last year so I just had a reverse osmosis procedure done so I can start over.

    The company that did that job was Calsaway in Phoenix. The treatment equipment is all self-contained in a cargo trailer. Once the process is under way they just leave and come back the next day. The equipment runs on a timer that is based on the size of the pool and the chemical loads they measured. They also set up a large bag in the pool where the fresh water gets pumped into to keep it from mixing in with the yet-to-be-processed water.

    Here's my starting numbers:

    FC 3
    CC 1
    pH 7.5
    TA 150
    CH 400
    CYA ~300

    After the equipment shut down last night I sampled the water from the bag and found this:

    FC 0
    CC 0
    pH 6.2
    TA 10
    CH 10
    CYA 0

    Very clean! Keep in mind these numbers are optimistic because there's still old water to be mixed in.

    This morning they added some basic chemicals. They told me they target FC=3, pH=7.0, and CYA=40. I assume they added the chems, I wasn't actually around when they showed up. I just finished testing tonight and here's the new numbers:

    FC 0
    CC 0
    pH 7.1
    TA 50
    CH 110
    CYA <20

    Clearly I have some changes to make, but I'm thrilled to have such a good starting point. The R/O treatment did cost more than draining/refilling would have, but the results are excellent and I didn't have to worry about draining in the 114 degree heat. I would do it again. Hopefully I won't have to for years.
    Shasta IGP - ~13,000 gal. - Pebbletec - Spa - Waterfall - Cartridge - Propane - Intellichlor SWG - VS-3050 - Easytouch - fiber optics

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Just had an R/O treatment done

    I intend to have that done. But first, I have to pay for a new dental crown and a smog check update course. I'll probably have the dough just in time for it to be too cold to swim....
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    Guest

    Re: Just had an R/O treatment done

    Awesome!!!!!

  4. Back To Top    #4
    Lershac's Avatar
    Join Date
    May 2007
    Location
    Baton Rouge, LA
    Posts
    1,215

    Re: Just had an R/O treatment done

    Quote Originally Posted by Richard320
    I intend to have that done. But first, I have to pay for a new dental crown and a smog check update course. I'll probably have the dough just in time for it to be too cold to swim....
    You might save some money having it done in the off season huh?
    (DIY):16K Gal 20X30 rectangular IG Gunite, w/spa, CCP 520 filter,2 Pentair VS pumps, 400KBTU Pentair gas heater, Heat Pump for cooling, **update5.25.2013** added an intellichem with acid pump that will control existing SWG. My Build Thread Here

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