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Thread: Iron stains-Overwhelmed and Frustrated

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    Iron stains-Overwhelmed and Frustrated

    I have iron stains that have reappeared again.
    I had used the ascorbic acid treatment and then added MetalFree by Natural Chemistry to remove the iron from the well water. (I did this last season with good results) It all worked great, but, after a few weeks now, I was raising slowly to shock level and at 10 ppm chlorine level, the horrible stains are back!
    I have added a double maintenance dose of MetalFree and stopped the chlorine addition. Will this remove my stains or should I add more of the MetalFree? Do I have to start over with the stain treatments?

    my readings:
    FC 10
    CC 0-.5
    ph 7.0
    TA 90-100
    CH 260
    CYA 35

    Thanks so much for your help
    My little bit of Heaven :)
    A/G, 13,050 gal, sand filter, vinyl liner
    AquaVac Tiger Shark robotic cleaner


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    JasonLion's Avatar
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    Re: Iron stains-Overwhelmed and Frustrated

    Usually adding sequestrant the moment the stains appear will remove them again over several hours. Keeping PH low, as it already is, and letting FC come down will both help the sequestrant work.
    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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    frustratedpoolmom's Avatar
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    Re: Iron stains-Overwhelmed and Frustrated

    Can I ask why you are shocking?
    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: Iron stains-Overwhelmed and Frustrated

    Quote Originally Posted by frustratedpoolmom
    Can I ask why you are shocking?
    I had not shocked in 2 weeks and since the CC was approx .5, I thought I needed to. Oh well, I am letting the FC come back down and hopefully the stain will go away too.
    My little bit of Heaven :)
    A/G, 13,050 gal, sand filter, vinyl liner
    AquaVac Tiger Shark robotic cleaner


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    Re: Iron stains-Overwhelmed and Frustrated

    Quote Originally Posted by JasonLion
    Usually adding sequestrant the moment the stains appear will remove them again over several hours. Keeping PH low, as it already is, and letting FC come down will both help the sequestrant work.
    I will give this a try. I know that the staining only started late in the day yesterday and i should have added the MetalFree then, it was raining and I just did not go check the pool at dark--my bad there.
    thanks for the help
    My little bit of Heaven :)
    A/G, 13,050 gal, sand filter, vinyl liner
    AquaVac Tiger Shark robotic cleaner


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    frustratedpoolmom's Avatar
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    Re: Iron stains-Overwhelmed and Frustrated

    I don't think you need to, only if it gets higher than .5
    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

  7. Back To Top    #7

    Re: Iron stains-Overwhelmed and Frustrated

    Quote Originally Posted by frustratedpoolmom
    I don't think you need to, only if it gets higher than .5
    My CC is usually .5 or less. Does that mean that I would not need to shock at all?
    thanks so much for your help.
    My little bit of Heaven :)
    A/G, 13,050 gal, sand filter, vinyl liner
    AquaVac Tiger Shark robotic cleaner


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    reebok's Avatar
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    Re: Iron stains-Overwhelmed and Frustrated

    correct. pool-school/shocking_your_pool
    some pools stay at .5 a lot. as long as it's .5 you're ok, just not above that.
    16x32 21,000 gallon in-ground exposed aggregate, 1.5hp pump, 120 sqft catridge filter, birdcage, solar panels, aquavac tigershark qc robot.

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    frustratedpoolmom's Avatar
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    Re: Iron stains-Overwhelmed and Frustrated

    Quote Originally Posted by sandysbiz
    My CC is usually .5 or less. Does that mean that I would not need to shock at all?
    That's the beauty of BBB and your own test kit.

    Last time I shocked was before I went on a 10 day vacation, and before that it was to close my pool for winter. Before that....I don't remember, vacation the summer before?
    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

  10. Back To Top    #10

    Re: Iron stains-Overwhelmed and Frustrated

    posting an update..my stains are a little lighter, but still there. The FC is 6.5 all other tests were unchanged and per my prior post.
    JasonLion: I do not see the sequestered iron laying in the bottom of the pool as it would normally do when there was an iron build up. I will continue to let the FC come down. Sunshine is out today, so that will help my process.
    Should I add any more of the metalfree or will it continue to lighten the stains as the FC drops? I had waited 6 days between the maintenance dose, I guess I should do it every 4-5 days. Am I on the right track now?

    frustratedpoolmom, you are so right about the test kit. I have the TF test kit and I am finally in control of my pool, not my pool in control of me.
    When I get a handle on the iron problem, it will be perfect.

    reebok: thanks for the link I had not understood it correctly, and this helps 8)

    Thank you to all who participate here at the forum, I have changed from baquacil a few years ago and LOVING IT !!!
    My little bit of Heaven :)
    A/G, 13,050 gal, sand filter, vinyl liner
    AquaVac Tiger Shark robotic cleaner


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