SKU: 80933536441
copper sulphate herbicide

copper sulphate herbicide Crystal Blue Copper Sulfate 5 lb

Sale price$20.98 Regular price$23.31
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 26 - Oct 1

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Description

copper sulphate herbicide Crystal Blue Copper Sulfate 5 lbCopper Sulfate Smart Crystals are the perfect solution for eliminating filamentous or string algae. At water temperatures of 60F or higher, it is safe to use on most varieties of fish (with some restrictions). This product is best applied in three ways: broadcasting, burlap bag dragging, or hot water spraying. We particularly suggest dissolving the crystals in hot water and then spraying the actively growing algae. Remember, always treat just half of

Copper Sulfate Smart Crystals are the perfect solution for eliminating filamentous or string algae. At water temperatures of 60F or higher, it is safe to use on most varieties of fish (with some restrictions). This product is best applied in three ways: broadcasting, burlap bag dragging, or hot-water spraying. We particularly suggest dissolving the crystals in hot water and then spraying the actively growing algae. Remember, always treat just half of the pond to prevent oxygen depletion due to algae death! 

This product is classified as state-restricted use in CT, NJ, for sale and use only by licensed applicators (your entire order will manually be canceled if you live in a listed state and add this product to the cart without a license number). Not for sale in CA. Not for sale in NY.

  • Treatment Area 

    Smart Crystals

    2,500 square feet

    0.3lbs

    5,000 square feet

    0.6lbs

    10,000 square feet

    1.2lbs

    15,000 square feet

    1.8lbs


    *Above rates are recommendations.  Always be sure to read the product label before you apply your pond algae treatment.       

  • Treat every 14 days
  • Apply by casting granules, dragging behind the boat in burlap, or dissolving and spraying
  • Do Not Use Copper Sulfate Pond Algae Control with KOI or Goldfish

        View Product Label
        View SDS for Copper Sulfate

        Copper Sulfate Pond Algae Control Shipping Restrictions

        This product has shipping restrictions and can only be shipped to the following places: IN, AL, AZ, AK, CA, CO, DE, D.C., FL, GA, ID, IL, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MS, MT, NE, NA, NH, NM, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, WA, WV, WI, and WY.

        Shipping Notes
        • Free Standard Shipping on $100+ Orders to the USA.
        • Except Preorder products are shipped in 48 hours.
        • Delivery to the USA:
        1. Standard Shipping : 3-10 business days
        • If time is of the essence, please consider selecting expedited delivery for faster service.
        Exchange/Return Notes
        • We offer a 30-day return/exchange service after receiving.
        • Final sale items are not eligible for returns or exchanges.
        • To process your return/exchange, please contact us at [email protected]
        • Please click here for more details>>> Return & Exchange Policy
        SKU: 80933536441

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        4.1 ★★★★★
        Based on 26 reviews
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        W.Winters
        Battle Creek, US
        ★★★★★ 3
        Leaves white cast, works okay under makeup.
        Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
        First time using this sunscreen. I have very sensitive skin and thought since my skin tolerates their cleansers and moisturizers surely it should tolerate the sunscreen. So far so good. It’s very calming on my skin (maybe because of the zinc), but it leaves a noticeable white cast especially if you have dark skin. I wear mine under makeup and have a separate sunscreen from another brand on days where I don’t want to wear makeup. The white cast actually acts as a blank base and helps my foundation to lay well. A tip I learned from makeup artists years ago. Sunscreens that leave a white cast cancels out your natural color and acts as a corrector, concealer and foundation to lay better and look more like skin. Think of it like painting on a blank canvas. The texture is not lotion like and is actually quite thick. make sure to moisturize well before apply this sunscreen. I’ll write an update if I notice any negative issues, but so far I’m content with it because of the purpose I'm using it for.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on October 23, 2023
        I
        Verified Purchase
        Idane Vazque Acebo
        Alexandria, US
        ★★★★★ 5
        Safe for very sensitive skin
        Style: SPF 50, Size: 3 Fl Oz (Pack of 1), Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
        It is an excellent choice, especially if you have sensitive skin or want to avoid chemical filters. Minerals such as zinc oxide and titanium dioxide act by forming a barrier that reflects UV rays instead of absorbing them.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on April 13, 2026
        L
        Verified Purchase
        Lacy
        Omaha, US
        ★★★★★ 5
        Go-To for Reef-Safe & Light-Weight Sunscreen
        Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
        Favorite sunblock to travel with. Appreciate the simplicity of it, and the fact that it rolls on and rubs in smooth. Of course the iconic scent is also a plus.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on May 18, 2026
        J
        Verified Purchase
        Jenny J
        Waukegan, US
        ★★★★★ 5
        Great choice
        Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
        After I suffered a second-degree burn from steam, I was told by my doctor that I would have to keep my new fresh skin sun-blocked for up to a year to avoid any scarring or hyper pigmentation. This has been a great selection as it is a roll-on, Which helps a lot with preventing messes that can happen with traditional sunblock bottles. I also like that it is easy to travel with, and the fact that it is zinc based.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on August 26, 2025
        A
        Verified Purchase
        A reader
        Charlottesville, US
        ★★★★★ 5
        My favorite new mineral sunscreen!
        Style: SPF 50 Roll On, Size: 3 Fl Oz (Pack of 1)
        This is my favorite new mineral sunscreen! I've been searching for years for a product that is easy to apply, not messy, and doesn't show up too white. This roll-on is the perfect solution. I keep it near the front door and quickly roll the sunscreen on my hands, arms, and chest before leaving the house. The sunscreen applies so quickly and uniformly-- there are no bare spots or messy globs to rub in. Also, the roll-on keeps the sunscreen from oozing out of the tube and getting all over everything. Finally, the roll-on method also eliminates the frustration of having half-filled tubes and pumps where you can't even access the sunscreen when the tube gets low. Here's hoping this doesn't happen with the roll-on. Thank you Sun Bum for creating this wonderful product. I also love the reasonable price.
        WAS THIS REVIEW HELPFUL?YesReportShare
        Reviewed in the United States on October 24, 2025

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