Crystal Blue Black Out - Questions & Answers

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  • Asked by John
    09/26/2019
    Q
    Does Crystal Blue Black Out kill agar and grass?
    A

    Crystal Blue Black Out does not kill anything.  It is used as a pond colorant only.

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  • Asked by Craig
    07/26/2016
    Q
    Can Crystal Blue Black Out be used in ponds used for potable water?
    A

    No, Crystal Blue Black Out is safe for fish, animals, recreation, irrigation, but it is not safe for potable water.

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  • Asked by Galen from Columbus N.c.
    07/31/2014
    Q
    How often should I apply Crystal Blue Black Out - Gallon?
    A
    Crystal Blue Black Out - Gallon should be reapplied onece every 30 days. Please let us know if you have any more questions.
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Displaying 1 to 3 (of 3 questions)