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Thread: Adding Blue Dye to pool water

  1. #1

    Adding Blue Dye to pool water

    I know that many lake companies add blue dye to water to reduce alge growth in lakes
    Using just basic food color, do you think that it would reduce the growth of alge in a pool?

    Would this reduce the sun consumption of chlorine?

    Is it dangerous?

  2. #2
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    Re: Adding Blue Dye to pool water

    No, no, and probably not
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  3. #3

    Re: Adding Blue Dye to pool water

    I suppose adding dye to chlorine is a bit off the wall and the chlorine would bleach it out

  4. #4
    Administrator JasonLion's Avatar
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    Re: Adding Blue Dye to pool water

    Food coloring won't work. All of the common food colors will be broken down by chlorine and gone within hours (or minutes more likely).

    Besides, we don't want to reduce the growth of algae, we want to totally eliminate it. If there was such a product, it might be a good thing to use when fighting algae. But for normal day to day use, chlorine works fine and you have to have chlorine anyway.
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  5. #5
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    Re: Adding Blue Dye to pool water

    Party pool, it can stain if you use too much! Also gets filtered out rather quickly.
    -Jaime

  6. #6
    Senior Member Richard320's Avatar
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    Re: Adding Blue Dye to pool water

    Quote Originally Posted by StuartPool
    I know that many lake companies add blue dye to water to reduce alge growth in lakes
    Using just basic food color, do you think that it would reduce the growth of alge in a pool?

    Would this reduce the sun consumption of chlorine?

    Is it dangerous?
    I don't think it's dye. I think it's copper sulfate. No algae and a really pretty turquoise color. It also stains things real good. They used to dump it in the artificial lake at an amusement park I worked at when I was a teenager. You don't want it in your pool, unless you like green hair.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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  7. #7
    Administrator JasonLion's Avatar
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    Re: Adding Blue Dye to pool water

    No, apparently it is a "completely safe organic dye". See for example this site or this one. Those two both appear to be organic dyes that will break down in the presence of chlorine.
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  8. #8
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    Re: Adding Blue Dye to pool water

    Ok maybe its just me but it might be fun to have a hot pink swimming pool for a day
    coloeb,
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  9. #9
    Senior Member NWMNMom's Avatar
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    Re: Adding Blue Dye to pool water

    I actually use an organic dye in my Koi ponds during the period just before I have full oxygenator vegetation growth (underwater plantlife) and surface coverage of my vegetation (lilies, etc) - it does in fact inhibit algae growth. But that is correct above, it would almost instantly be neutralized by the chlorine.
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    Beats Driving to the Lake!

  10. #10
    Administrator JasonLion's Avatar
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    Re: Adding Blue Dye to pool water

    Party Pool sells red, green, and blue dye suitable for use in swimming pools. It lasts several days and then fades out.
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  11. #11

    Re: Adding Blue Dye to pool water

    Quote Originally Posted by JasonLion
    Party Pool sells red, green, and blue dye suitable for use in swimming pools. It lasts several days and then fades out.
    Im going to get some of this for July 4th
    It should be fun.

  12. #12
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    Re: Adding Blue Dye to pool water

    The red turns the pool a shade of purple.
    -Jaime

  13. #13
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    Re: Adding Blue Dye to pool water

    Quote Originally Posted by DBfan187
    The red turns the pool a shade of purple.
    I'm getting ready to open my pool, and I just overheard my Mother-in-law telling my wife how great the water looked last year. I might have to throw a bottle of this in before be pull the loop lock cover off.
    20,000 Gallon kidney sort of a sand filtered gunite in ground pool w/ hot tub.

  14. #14
    Senior Member poolgirl22's Avatar
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    Re: Adding Blue Dye to pool water

    I keep reading this thread...and every time I keep thinking of something my pool store told me just this year. I was buying a couple bags of shock...not sure which of the proteam ones I was getting, but the guy told me he really liked this shock because....

    Are you ready?

    It put an ever so slight blue tint to the water when it was doing its job properly....

    yah, in other words once you kill all the algae and have FC levels as high as they need to be and nothing else is living in your water...it will be blue and sparkly...

    And still I bought it. Then I found TFP...

    If I was open in March, I'd put green dye in my pool just like the chicago river!
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  15. #15
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    Re: Adding Blue Dye to pool water

    We don't have anyone who would buy the green or yellow, so I don't stock it. lol
    -Jaime

  16. #16
    Mod Squad JohnT's Avatar
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    Re: Adding Blue Dye to pool water

    Quote Originally Posted by DBfan187
    We don't have anyone who would buy the green or yellow, so I don't stock it. lol
    A handful of the yellow would be great for practical jokes though!
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  17. #17
    Senior Member guamguy's Avatar
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    Re: Adding Blue Dye to pool water

    If you want green water, save your money on the dye! Just let your FC go to zero for a while, it's a sure way to get green water
    lol
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