Nuisance growth of aquatic plants and bloom-forming algae in natural waters is generally due to high concentrations of:

Nuisance growth of aquatic plants and bloom-forming algae in natural waters is generally due to high concentrations of phosphorus. Phosphorus increases the fertility of water body which encourages the nuisance growth of aquatic plants and bloom-forming algae. This is called Eutrophication i.e. natural aging of water body by nutrient enrichment of its water.