If you have an algae problem on your pond one of the quickest ways of killing that algae is to use raw granular copper sulfate. Granular copper sulfate can be applied in one of two ways. Some prefer to cast the copper on the algae mats, others prefer converting it to a liquid solution for a spray application.
When using granular copper sulfate as a spay solution you will need to dissolve the granular copper until it is completely gone. The easiest way of doing this is to use hot water because it will speed up the breakdown process of the copper tremendously. You then need to either use some sort of stirring stick or some form of agitation to bring those copper granules into solution. This process can take approximately 20 minutes. Hot water is the key! If you do not have hot water then it will take longer to bring that copper into solution and you may plug up your sprayer.
Always remember to treat only a portion of your pond at a time to avoid oxygen depletion and possible fish kill. Copper sulfate should not be used with Koi, Goldfish, or Trout.
For more information about using copper sulfate for pond algae control contact the experts at Sanco.