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Thread: Green tint to newly filled pool water

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    Green tint to newly filled pool water

    Yesterday I filled a small above ground pool (14' by 42''). The water had an immediate greenish tint. It is clear and the liner is blue. I have added shock and stuff to address ph and calcium hardness. The numbers using a strip (yes, I know those sux) are coming in line. what would cause new water to have the green tint? I am on a water system (no well). Metals? I am using the pump/filter it came with; not sw.

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    JasonLion's Avatar
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    Re: Green tint to newly filled pool water

    Welcome to TFP!

    That could be from just a tiny hint of algae or it could be from iron in the water. Get your levels balanced and if it doesn't go away in 24 hours and you aren't losing chlorine quickly try a startup dose of sequestrant.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Green tint to newly filled pool water

    thx for the quick reply. this might be a double reply; did not see my reply from earlier listed. I filled the pool, added the chlorine dispenser (floater) and quickly noticed it was clear water but green tint. could algea bee in there this quick? was a new out of the box pool. thx

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    Richard320's Avatar
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    Re: Green tint to newly filled pool water

    If it turned green after you added the chlorine, it's the iron reacting. It should just go away in a day or so.
    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: Green tint to newly filled pool water

    sweet. ill watch it and keep working on levels. i think its getting there, just working on the ph now. i noticed that under the section dealing with chemicals that cya can raise if the pucks of chloriine are used (trichlor?). should i stop using that floating dispenser and start using liquid bleach/chlorine? if yes, how do you measure the appropriate amount to keep FC right? lastly, if the green tint is iron, is it safe to use the pool while it resolves? again thx so much, you guys are the best.

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    Richard320's Avatar
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    Re: Green tint to newly filled pool water

    Quote Originally Posted by arroncop View Post
    sweet. ill watch it and keep working on levels. i think its getting there, just working on the ph now. i noticed that under the section dealing with chemicals that cya can raise if the pucks of chloriine are used (trichlor?). should i stop using that floating dispenser and start using liquid bleach/chlorine? if yes, how do you measure the appropriate amount to keep FC right? lastly, if the green tint is iron, is it safe to use the pool while it resolves? again thx so much, you guys are the best.
    Yes, trichlor pucks raise CYA and they also lower pH. If your pH is high and you haven't added any cyanuric acid stabilizer, the pucks are actually helping you.

    You test your water. When you know the CYA level, you know what your FC level should be, and poolmath will crunch the numbers and tell you how much bleach to add. http://www.troublefreepool.com/conte...ater-chemistry would be a good place to start reading in Pool School. Then move on to the articles here: http://www.troublefreepool.com/conte...pool-chemistry They should answer a lot of questions you will have before you even think to ask them.

    If the green is Iron, it won't hurt you. It's the same water you drink and bathe in, right?
    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: Green tint to newly filled pool water

    Quote Originally Posted by Richard320 View Post
    Yes, trichlor pucks raise CYA and they also lower pH. If your pH is high and you haven't added any cyanuric acid stabilizer, the pucks are actually helping you.

    You test your water. When you know the CYA level, you know what your FC level should be, and poolmath will crunch the numbers and tell you how much bleach to add. http://www.troublefreepool.com/conte...ater-chemistry would be a good place to start reading in Pool School. Then move on to the articles here: http://www.troublefreepool.com/conte...pool-chemistry They should answer a lot of questions you will have before you even think to ask them.

    If the green is Iron, it won't hurt you. It's the same water you drink and bathe in, right?
    im using Ph down (sodium bisulfate) to lower Ph. wanted to make sure the green would not turn our hair green lol. we all have blonde hair (or is that copper that does it?) .

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    Re: Green tint to newly filled pool water

    on the pool math calculator, what does the "not set up" goal level refer to .....

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    Richard320's Avatar
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    Re: Green tint to newly filled pool water

    Quote Originally Posted by arroncop View Post
    on the pool math calculator, what does the "not set up" goal level refer to .....
    Down at the bottom you need to tell it what the pool is made of and how you're chlorinating.
    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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