Highly concentrated aqueous dispersion product that provides a spectacular visual appearance to stored water (reservoirs, ponds, lagoons, etc.) while reducing the growth of surface algae. Its mechanism of action consists of treated water with DYNALGAE BLUE reflecting part of the solar radiation that strikes the surface of the stored water, limiting the photosynthetic activity of the algae while imparting an attractive blue color to the water. The treated waters are suitable for irrigation and are compatible with the use of bio-enzymatic products and conventional algaecides. Visible results at low doses. Copper-free.