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Crystal Blue Copper Sulfate - Questions & Answers

Learn more about Crystal Blue Copper Sulfate

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Crystal Blue Copper Sulfate
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Displaying 1 to 20 (of 35 questions)
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  • Asked by Paula from Laplata Mo
    06/29/2018
    Q
    How long do you wait before swimming after Crystal Blue Copper Sulfate treatment?
    A

    There is no wait time for swimming after applying Crystal Blue Copper Sulfate

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    107 of 119 people found this answer helpful.
  • Asked by Robert from St. Louis Mo
    07/10/2015
    Q
    What is the best way to apply Crystal Blue Copper Sulfate on algae?
    A

    Crystal Blue Copper Sulfate should be applied on a sunny day after mixed with water. You should spray one-half of the water area and wait 14 days before treating the remaining half. This will prevent the suffocation of the fish.

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    102 of 121 people found this answer helpful.
  • Asked by David from Hulbert, Ok
    06/11/2017
    Q
    Is Crystal Blue Copper Sulfate safe for fish?
    I have a 1/2 acre pond that has bass, blugill,and crappie.
    A

    Crystal Blue Copper Sulfate is toxic to fish and aquatic invertebrates per the product label but can be used safely in steps.   Treatment of aquatic weeds and algae can result in oxygen loss from decomposition of dead algae and weeds. This oxygen loss can cause fish and invertebrate suffocation.  To minimize this hazard, do not treat more than ½ of the water body to avoid depletion of oxygen due to decaying vegetation. Wait at least 14 days between treatments. Begin treatment along the shore and proceed outwards in bands to allow fish to move into untreated areas.

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    56 of 67 people found this answer helpful.
  • Asked by Matt from Wilmington, Nc
    10/27/2016
    Q
    Is the Crystal Blue Copper Sulfate formulation safe to kill lichen/algae growing on a live oak tree?
    If safe, how to formulate mixture for backpack sprayer.
    A

    No, Crystal Blue Copper Sulfate is no longer labeled for an application on trees or other vegetation. Keep in mind that lichen do not cause any harm to host trees.

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    52 of 57 people found this answer helpful.
  • Asked by Abby from Clyde, Ohio
    05/29/2019
    Q
    Do you need to dissolve the Crystal Blue Copper Sulfate in water and then spray on the pond, or can you just sprinkle the crystals in the water?
    A

    For most applications of Crystal Blue Copper Sulfate, you will dissolve the granules in water and then spray over the water surface. Per the product label, you should not apply granules directly to the water unless you have the proper equipment and are already familiar with this treatment.

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    33 of 41 people found this answer helpful.
  • Asked by Tammy from Lake Butler, Fl
    04/20/2017
    Q
    How much Copper Sulfate do you mix in a one gallon sprayer for duckweed in shallow water of a small pond?
    A

    Crystal Blue Copper Sulfate is not labeled for duckweed, only algae.  For duckweed control you should instead use a product like Diquat Water Weed and Landscape Herbicide.

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    27 of 55 people found this answer helpful.
  • Asked by David from Augusta, Ga.
    05/19/2019
    Q
    Can you eat fish caught from a pond that was recently treated with Crystal Blue Copper Sulfate?
    5 days ago
    A

    Yes, according to the manufacturer, it is safe to consume fish that was caught in a pond where Crystal Blue Copper Sulfate was used 5 days ago. 

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    26 of 27 people found this answer helpful.
  • Asked by Wendy from Dresher
    07/27/2014
    Q
    How much area does one jar of Crystal Blue Copper Sulfate cover?
    A
    Crystal Blue Copper Sulfate can be applied using 2 1/2 to 4 lbs per acre foot. The application varies depending on how much water you treating. Please see page five of the product label for calculation instructions.
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    21 of 35 people found this answer helpful.
  • Asked by John from Clayton, Nc
    05/09/2019
    Q
    Can I use Crystal Blue Copper Sulfate to control cattails in retention pond?
    How much to use in a 2 gallon pump sprayer?
    A

    Crystal Blue Copper Sulfate is for algae only and would not affect cattails.  Diquat Water Weed and Landscape Herbicide would be a better option as it is an aquatic herbicide labeled for cattails

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    20 of 25 people found this answer helpful.
  • Asked by Jenny from White Plains
    03/07/2018
    Q
    What is the lowest temperature the water can be using Crystal Blue Copper Sulfate?
    A

    Per the product label, "Generally, larger quantities of Crystal Blue Copper Sulfate will also be required to control algae growth when water temperatures are low (below 60ºF), in hard water, and in water that is free flowing". 

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    19 of 21 people found this answer helpful.
  • Asked by Kathleen from Galloway
    04/27/2021
    Q
    How many fluid ounces of Crystal Blue Copper Sulfate do I mix in a one gallon sprayer?
    A

    Crystal Blue Copper Sulfate is mixed at roughly 2.6 oz per gallon of water. Please view the product label for more information. 

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    16 of 18 people found this answer helpful.
  • Asked by Jerry
    02/09/2016
    Q
    Can Crystal Blue Copper Sulfate be used to for cleaning algae on the side of a house?
    A

    Crystal Blue Copper Sulfate should only be used to control algae in listed bodies of water and for other uses approved on the product label. This product can be corrosive and would likely cause damage if you tried to spray it on a structure. We do sell other products made for this use, such as Lilly Miller Moss Out Heavy Duty Cleaner, which is made specifically to treat surfaces like roofs, siding, concrete, and patios. Bayer Advanced 2 in 1 Moss and Algae Killer RTS is another option that is convenient for treating smaller areas.

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    11 of 14 people found this answer helpful.
  • Asked by Leslie from Suffolk, Va
    08/12/2019
    Q
    How long after treatment of Crystal Blue Copper Sulfate can cattle /horses drink from pond?
    A

    It is not recommended to treat ponds with Crystal Blue Copper Sulfate where there are grazing animals drinking from the pond. If already treated, please contact the manufacturer regarding the application as it states on the label, “For applications in waters destined for use as drinking water, those waters must receive additional and separate potable water treatment.”

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    11 of 17 people found this answer helpful.
  • Asked by Brad from Ia
    07/18/2015
    Q
    At what rate could I mix Crystal Blue Copper Sulfate with water to kill pond moss or algae?
    I have the product and just thought I might get better coverage without having to buy Cutrine Plus.
    A

    Crystal Blue Copper Sulfate can be applied using 2 1/2 to 4 lbs per acre foot. The application varies depending on how much water you treating. Please see page five of the product label for calculation instructions.

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    10 of 30 people found this answer helpful.
  • Asked by Janine from West Lafayette, Indiana
    03/09/2016
    Q
    Can Crystal Blue Copper Sulfate be used in a koi pond to kill algae? Is it safe for the koi?
    A

    Unfortunately Crystal Blue Copper Sulfate is toxic to koi.  We do not carry an algaecide or any other products that are safe to be used in koi ponds at this time. We would recommend that you contact a koi pond supplier in your area or possibly your local cooperative extension office for advice on what products to use. 

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    8 of 10 people found this answer helpful.
  • Asked by Nikia from Atchison, Ks
    07/12/2013
    Q
    Is the Crystal Blue Copper Sulfate appropriate and safe for use in a pool?
    A
    The product label for the Crystal Blue Copper Sulfate does not state that it can be used in pools and says to avoid direct contact with humans. Since this is an off label usage, we suggest contacting Sanco Industries at 888-697-2626 to see if any harmful effects would come of you using it in this manor. Please let us know if you have any other questions.
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    8 of 13 people found this answer helpful.
  • Asked by Syat from St Williams, On Canada
    01/13/2019
    Q
    How long should I let Copper Sulfate sit before snaking a basement drain?
    A

    Crystal Blue Copper Sulfate cannot be applied directly into a floor drain as it will corrode metal drains. It also needs some water flow to work correctly and must be used before complete stoppage so it can get to the area of root growth. Please refer to the product label for the correct uses for this product.

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    7 of 10 people found this answer helpful.
  • Asked by Nick from Illinois
    05/12/2015
    Q
    What is the form and size of Crystal Blue Copper Sulfate?
    A
    Crystal Blue Copper Sulfate is a powder formulation with crystals and they are blue.
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    7 of 8 people found this answer helpful.
  • Asked by Chris
    08/15/2018
    Q
    Does Crystal Blue Copper Sulfate kill water willow?
    A

    Crystal Blue Copper Sulfate is only labeled to treat algae and will not affect water willow.  We recommend applying Diquat Water Weed and Landscape Herbicide for the water willow.
     

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    6 of 8 people found this answer helpful.
  • Asked by Smrity
    10/24/2016
    Q
    Does Crystal Blue Copper Sulfate remove Euglena?
    A

    Yes, Crystal Blue Copper Sulfate is labeled for the removal of euglena. The mixing rate is 1.36-2.72 lbs per acre foot.

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    6 of 8 people found this answer helpful.
Displaying 1 to 20 (of 35 questions)