Algae naturally occurs in nature, and has often been used to treat harmful chemicals that exist in sewage. However, some algae can lead to cyanobacteria blooms which contains excess levels of nitrogen and phosphorus. From there it is all down hill. This eliminates oxygen which has lead to a large number of fish deaths. That surge in decay can cause mercury poisoning and other illnesses in humans when the fish or contaminated water are consumed. Luckily, you can stop unwanted algae growth with Copper Sulfate. To learn about Copper Sulfate and other materials that will keep your backyard clean and healthy visit https://www.solarogen.com/.