Algae need phosphates to grow. With JBL PhosExPond Direct you bind off the phosphates and cut the algae off from their main source of nutrition. The phosphates come from fish food, dead pond plants and dead algae. With algae treatments, the dying algae release the phosphates bound in them and nourish the next generation of algae. That’s why it’s vital to bind the phosphates!
Buy JBL PhosEx Pond Direct / Find additional information: https://www.jbl.de/?mod=products&func=detail&lang=en&id=3221&country=gb
You can find more about algae prevention and phosphates in pond water in the Themeworld Pond under water care: https://www.jbl.de/?mod=areas&func=essential_section&lang=en&id=129&country=gb