Water eutrophication phenomena (eutrophication) is a common water quality impairment occur in the reservoir with the phenomenon of the concentration of nutrients in the Lake increases (Puijenbroek and the 2004 et al [11]) do break out water plants (such as algae, water hyacinth, Eichhornia crassipes, etc.), increase the quality of organic matter, suspended solids, reduced oxygen in the water, especially in the lower depths, can cause the death of fish and great influence on other aquatic species [9], causing costly difficulties for national economic sectors
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