Haquoss h33 algae limit extra fights mildew and stringy algae in fresh water. Haquoss h33 is an adjuvant product for water purification in the prevention of the appearance of algae by brush and filamentous green and blue in the aquarium. It is essential to intervene as soon as the phenomenon appears. Reduce the lighting hours at the same time and, after the treatment, make more frequent partitions of water by siphoning the bottom. We recommend the addition of haquoss nitrator in the filter to eliminate the appearance of nitrates and consequently the re-growth of algae. To be used only in freshwater aquariums. Restores the biological balance and the anaerobic process.