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Copper Sulfate Pentahydrate Crystals - Root Killer/Destroyer - 25% Copper (Cu) - 100% Water Soluble

• ...t, and clean up your ponds/pools and make them look beautiful again without hurting the eco-system. Greenway Biotech, Inc. Copper Sulfate could also be used to make your own natural fungicide such as Bordeaux Mixture, which the recipe could be found under the "How To" tab. Other popular uses of Copper Sulfate is as mordant in vegetable dyeing and to make copper crystals that are very popular for science projects in middle and high school. Copper Sulfate is one of the most used compounds in the world and it has a wide variety of applications. Thank You for Considering Us!.