Crystal Blue Copper Sulfate

5 out of 5 stars 6 Reviews | 21 Q&A

Crystal Blue Copper Sulfate

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Average Rating

5 out of 5 stars Rating: 5

6 Reviews | 21 Q&A

Product Overview

Crystal Blue Copper Sulfate controls most species of algae like filamentous or string algae with very low concentrations of copper sulfate. Crystal Blue Copper Sulfate is granular copper sulfate.

Features and Specs

Active Ingredient: Copper sulfate pentahydrate 99%
Target pests: Algae: Filamentous, String Algae
* See label for complete list
For use in: Ponds, Impounded Water, Sewer, Septic Tanks and others
* See label for complete list
Application: 2 1/2 to 4 lbs per acre foot
* See label for complete application instructions
Pet safe: Yes, if used as directed on label
Formulation: Professional Product
NOT FOR SALE TO: * Sale & Use Only by Licensed Applicators
State-Restricted Use in CT, NJ, NY
Shipping Weight: 5.02 lbs
Manufacturer: Sanco Industries
UPC: 768980003335
EPA Registration: 83190-2-72838

Details

Treatment of algae can result in oxygen loss from decomposition of dead algae. This loss can cause fish suffocation. To minimize this hazard, treat one-third to one-half of the water area in a single operation and wait 14 days between treatments. Begin treatments along the shore and proceed outward in bands to allow fish to move into untreated water.

NOTE: If treated water is to be used as a source of potable water, the metallic copper residual must not exceed 1ppm (4 ppm copper sulfate pentahydrate).

Minimum number of days between applications = 14 days.

State law prohibits the use of this product in sewage systems in the State of Connecticut and in the following counties of California: Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano and Sonoma. Not for sale or use in septic systems in the state of Florida.

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  • 5 of 5 Stars

    crystal blue copper sulfate

    By Barbara on 10/12/2012

    Verified Purchase

    I have had pools all of my adult life. and when i live in the north keeping the pool alge free was easy but now i live in Florida were the long hot days make alge a big problem. after spending hundreds of dollars on chemicals i remember using copper sulfate one really hot summer up north it worked great, pool stayed blue. so i tried it on my never ending task of keeping the Florida pool blue. works great, NO MORE GREEN IN MY POOL EVER! and the cost is a lot, lot, cheaper then the algiaside they sell in pool store cause you only need a little pit. and you don't need to put the copper sulfate in every two or three days like you do with the other poll chemicals

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    15 of 15 people found this review helpful

  • 5 of 5 Stars

    Great Product!

    By Anonymous on 07/11/2013

    Verified Purchase

    Crystal Blue removed the algae from our pond in just days. It was very easy to use. I just used it dry by broadcasting it across sections of the pond. I did about half of the pond the first week and the other side the next. I had no issues with the fish, turtles or fish in the water. Now I can see them much better! I wore gloves, a mask and safety glasses for protection. No issues with any skin irritation. I will order this again!

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    13 of 14 people found this review helpful

  • 5 of 5 Stars

    got it done

    By Frank on 04/07/2015

    Verified Purchase

    I had a litte moss forming in the edge of my pond this stuff works great i dissolved some of the crystal in my sprayer sprayed it on top in one day started turning dark three days it was gone

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    4 of 4 people found this review helpful

  • 5 of 5 Stars

    Crystal Blue Copper Sulfate Granular

    By Stuart on 07/24/2016

    In our experience this is the only product to use to rid ponds of filamentous algae. We found that how you apply the product is very important. We have a 3 acre pond that we let the algae get away from us and both consulted and used pond management companies to no avail. They said that it could not be eradicated, only controlled thru the use of tilapia which in Alabama dies off each year. Liquid injection would only work by using our portable tanked pressure washer which would literally grind the crystals into a consistent liquid. Trying to dissolve the product is very hard to do. Using the pressure washer with a 8' wand and injecting it underwater at the root system and spraying the floating offspring worked, but it took three applications. We have a second small one acre pond and decided to try a different application approach. We took one of the plastic jug containers that the sulfate comes in and attached it using worm gear clamps to a broom handle. Next we drilled a 3/8" hole in the plastic top. We simply walked the shoreline sprinkling the crystals on the surface. The crystals immediately sank directly onto the root systems. You need a slight breeze that pushes the floating mats against the banks. This type algae is very invasive and takes a persistent attitude to eradicate. The Crystal Blue Copper Sulfate in granular form is the only way to go. The product appears to be expensive but in the big picture it is required to completely eradicate the algae. Its the only product we will use if and when the algae reappears. Note: Dyeing the pond is very important also. We strongly recommend the use of Prime Source WSB Colorant. Great product.......

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    4 of 5 people found this review helpful

  • 5 of 5 Stars

    Artifical Waterfall Algae Control

    By Kevin on 10/31/2016

    This product stopped a minor algae bloom in my decorative waterfall and keeps the problem under control. My waterfall and pond gets a lot of sun (Arizona) and algae growth can be a problem. Not any more with a once per week dose. I hope to reduce the dose frequency going forward.

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    1 of 1 people found this review helpful

See all 6 customer reviews

Questions & Answers

Have a question about this product?
  
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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24 of 32 people found this answer helpful

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

Yes, Crystal Blue Copper Sulfate can be used to kill lichen/algae on oak trees. You would use it at a rate of 8 oz. per 3 gallons of water per the product manufacturer. They also recommend mixing in warm water so the product can disolve the best. 

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17 of 19 people found this answer helpful

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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12 of 13 people found this answer helpful

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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7 of 16 people found this answer helpful

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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7 of 13 people found this answer helpful

See all 21 customer questions

Crystal Blue Copper Sulfate 5 out of 5 stars Rating: 5 (6 Reviews / 21 Q&A)

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