Phosphates (PO4) are often a constant issue for swimming pond owners. This is not surprising, as phosphorus compounds are an essential nutrient for plant life. Unfortunately, the nutrients introduced during bathing or when filling the pond with water are not only metabolized by the desired aquatic plants. Thread algae and floating algae also make use of the nutrients on offer and can make the pond ambience look unpleasant. So that you don't have to worry too much about phosphates, we have developed phosphate adsorbers that remove the nutrients from the filling water before they can enter the cycle. It is also possible to continuously pass the bathing water through a phosphate adsorber and thus continuously remove nutrients from the system.