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Thread: SWG Superchlorination

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    CajunFoots's Avatar
    Join Date
    Sep 2008
    Location
    Addis, Louisiana
    Posts
    10

    SWG Superchlorination

    About once every 2 weeks, I Superchlorinate my pool for 24 hours according to manufacturer's instructions. It does a fine job. However, I've noticed that every time I do so, there is a chalky white substance that collects at the bottom corners of my pool.

    12,000 gallon Gunite/Plaster Pool 1.5 years old
    Goldline SWG (currently set at 60%)
    Pumps run 12 hours normally
    Ozone system

    Samples are as follows:

    FC - 2.44
    TC - 2.60
    pH - 7.7
    ALK - 77
    CH - 284
    CYA - 72
    Salt - 3100
    Borates - 50
    Temp - 91 degrees F
    * I use the Pool Calculator everytime and it says that my water is balanced. My plaster is in excellent condition.

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    No P in my ool's Avatar
    Join Date
    Jun 2007
    Location
    Logan IA
    Posts
    219

    Re: SWG Superchlorination

    Quote Originally Posted by CajunFoots
    About once every 2 weeks, I Superchlorinate my pool for 24 hours according to manufacturer's instructions. It does a fine job. However, I've noticed that every time I do so, there is a chalky white substance that collects at the bottom corners of my pool.

    12,000 gallon Gunite/Plaster Pool 1.5 years old
    Goldline SWG (currently set at 60%)
    Pumps run 12 hours normally
    Ozone system

    Samples are as follows:

    FC - 2.44
    TC - 2.60
    pH - 7.7
    ALK - 77
    CH - 284
    CYA - 72
    Salt - 3100
    Borates - 50
    Temp - 91 degrees F
    * I use the Pool Calculator everytime and it says that my water is balanced. My plaster is in excellent condition.
    You probably should do this with bleach as using that setting shortens the life of the unit. I was wondering if there was a reason that you do this. Are your cc's going above .5. If you haven't already read pool school about when to shock your pool. Peace
    21' Leslies Beachland Ag Pool, 10,000 gallons, professionally installed (best money I ever spent) Hayward 16" sand filter w/Pentair two speed pump Fafco 4x20 solar heater,Aqua Trol RJ. Borates added. Hard plumbed.

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    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: SWG Superchlorination

    Routine shocking isn't necessary in a properly balanced and chlorinated pool - only when your CC is above .5, you see visible algae or cloudy water (which you shouldn't see in a properly chlorinated pool ).

    You should be maintaining your FC levels between 3-5, and never below 3. If you suspect you have a high FC demand and the SWG has trouble keeping up, I'd suggest you turn it off and perform an overnight FC loss test.
    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

  4. Back To Top    #4

    Re: SWG Superchlorination

    The chalky stuff could be scale from the plates. Ever acid wash the cell?

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