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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.
Product Documents
| 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 | CT, ME, NJ, NY (Restricted To Licensed Applicators Only) |
| Shipping Weight | 5.81 lbs |
| Manufacturer | Sanco Industries |
| UPC | 768980003335 |
| EPA Registration | 83190-2-72838 |
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.
| 5 stars | 8 | |
| 4 stars | 0 | |
| 3 stars | 0 | |
| 2 stars | 0 | |
| 1 star | 0 |
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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28 of 29 people found this review helpful
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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26 of 30 people found this review helpful
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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13 of 14 people found this review helpful
got it done
By Frank on 04/07/2015
Verified Purchase
One and Done
By Randy on 05/25/2018
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
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
I have a 1/2 acre pond that has bass, blugill,and crappie.
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
If safe, how to formulate mixture for backpack sprayer.
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
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
Crystal Blue Copper Sulfate
Rating: 5 (8 Reviews / 35 Q&A)
