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Thread: Bleach turned pool green?!

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    Bleach turned pool green?!

    Saturday we bought and set up a small 10x30 ring pool for my daughter. Today when my husband checked the chlorine it was at 0 and the ph was right around where it needed to be at 7.2. My husband was reading a couple sites (not sure if this was one or not) and he found a calculator that told him for the 1380 gallons he should use 4 cups of bleach. He put the bleach in with the pump running, when he went back out less than an hour later to put the cover on for the night the once clear water had a green tint to it. The water isn't cloudy or murky looking just green. Does anyone know what happened or how we can fix it? Do we need to just drain and start over? The bleach is the only thing he's put in the pool since Saturday night when we got it set up.

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    duraleigh's Avatar
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    Re: Bleach turned pool green?!

    That green tint is iron precipitating from the water. Run your filter/pump 24/7 and it will go away in a day or so normally.

    Did you fill it from a well?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Bleach turned pool green?!

    Quote Originally Posted by duraleigh View Post
    That green tint is iron precipitating from the water. Run your filter/pump 24/7 and it will go away in a day or so normally.

    Did you fill it from a well?
    We had a water truck fill it so I am assuming yes. We have the pump on now, thank you for the quick response.

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    Re: Bleach turned pool green?!

    When testing it today the chlorine side turned orange which wasn't on the chart and the ph was at 8.2. I took the cover off this morning and it has been in the sun all day still green tinted but can see clearly to the bottom. I'm wanting to drain and refill the husband is determined to see this through.

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    Mod Squad jblizzle's Avatar
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    Re: Bleach turned pool green?!

    That means your FC is higher than 5ppm ... likely up around 20ppm I think ... how did it get so high? If the FC > 10ppm, then the pH test will also read artificially high.

    FYI, start using PoolMath. 4 cups raised your FC by 15ppm (if it was 8.25% bleach). That is WAY too high with no stabilizer in the water (I am assuming you have not added this yet).

    Read this: http://www.troublefreepool.com/conte...emporary-pools
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    Re: Bleach turned pool green?!

    I don't think he has he didn't say anything about it. Should I tell him to add that or is it too late at this point?

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    Mod Squad jblizzle's Avatar
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    Re: Bleach turned pool green?!

    You need to get stabilizer in the water. It buffers the FC and protects it from the sun. Use PoolMath and get 30ppm of CYA dissolving.

    How much Pool School have you read? Start with these:
    ABCs of Water Chemistry
    Recommended Pool Chemicals
    How to Chlorinate Your Pool
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Re: Bleach turned pool green?!

    Ok thank you I will check these out when I get off work in the morning.

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