Excessive amounts of nutrients dissolved in water often lead to eutrophication and the occurrence of water blooms. The result is excessive growth of algae and cyanobacteria, reduced water clarity and the formation of unpleasant odours, while the reduction of oxygen in the water causes fish die-off and the accumulation of bottom sediment and silt. The compositions of natural bacteria contained in our preparations initiate microbial biodegradation processes that naturally and rapidly improve degraded water bodies.