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Thread: False negative metals test??

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    Exclamation False negative metals test??

    Having trouble getting pool from Orange to clear. After adjust TA and pH. Took sample to locals Leslie pool supply and they tell me no iron or copper. Every time I try and add chlorine the water turns orange/brown. Use ascorbic acid and it clears again. Took test water after using AA. Could this give me false test for metals? If AA is clearing it, isn't it a metals problem or could it be other?

    FC = 1
    TA = 110
    Cya = 90-100
    CH = 0
    pH = 7.5
    IG-vinyl liner, 39,000 gallons, Hayward 1 1/2 hp super pump, Sand filter (not sure on flow)
    Locale - NE Texas

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    Richard320's Avatar
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    Re: False negative metals test??

    I wouldn't trust any of Leslies tests. You're describing Iron in the water if you ask me, no matter what they say. The only possible defense is if you added a sequestrant. That will bind to the metal and prevent it from showing.

    Check my reply in this thread and look at the pictures in the linked threads Water turning Brownish Green after adding Chlorine
    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!

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    Re: False negative metals test??

    Thanks. Will retreat AA. Add sequestrant. Paper towels. We'll see.
    IG-vinyl liner, 39,000 gallons, Hayward 1 1/2 hp super pump, Sand filter (not sure on flow)
    Locale - NE Texas

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    Richard320's Avatar
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    Re: False negative metals test??

    Quote Originally Posted by smithp View Post
    Thanks. Will retreat AA. Add sequestrant. Paper towels. We'll see.
    I think you want the rust to appear so you can snag it. Don't sequester it yet. Let the pool turn orange/brown and remove the Iron with paper towels or pillow filling. Then treat whatever's left.
    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!

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    duraleigh's Avatar
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    Re: False negative metals test??

    +1 what Richard says. That's iron. Your sand filter will also filter it out (now that it has precipitated).
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: False negative metals test??

    Need to borrow a big truck and trailer. Going to drag pool off into the woods and leave it.

    Apparently haven't gotten the metals out. Every time I add chlorine it goes brown. Any step by step on how to make a filter (like I have seen in pics posted) to catch the metals or do the paper towels work as well (did not seem to work for me).

    So if I am hearing right, raise chlorine from 0 (where it is), let metals precipitate, do the paper towels, then add AA for stains and Metal Magic (or magic mike) as the wife calls it to keep metals in solution???

    Man this pool makes me feel dumb!
    IG-vinyl liner, 39,000 gallons, Hayward 1 1/2 hp super pump, Sand filter (not sure on flow)
    Locale - NE Texas

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    Re: False negative metals test??

    Gonna try a copy this over to chem 201
    IG-vinyl liner, 39,000 gallons, Hayward 1 1/2 hp super pump, Sand filter (not sure on flow)
    Locale - NE Texas

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