Algaecides
Algaecide or algicide is a biocide used for killing and preventing the growth of algae, often defined in a loose sense that, beyond the biological definition, also includes cyanobacteria ("blue-green algae"). An algaecide may be used for controlled bodies of water (reservoirs, golf ponds, swimming pools), but may also be used on land for locations such as turfgrass. Types Inorganic compounds Some inorganic compounds are known since antiquity for their algicidal action due to their simplicity. * Copper(II) sulfate remains "the most effective algicidal treatment". A related traditional use is the Bordeaux mixture, used to control fungus on fruits. * Hydrated lime, as a biocide, is allowed in the production of organic foods. Barley straw Barley straw, in England, is placed in mesh bags and floated in fish ponds or water gardens to help reduce algal growth without harming pond plants and animals. Barley straw has not been approved by the United States Environmental Protection Ag ...
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Dichlone
Dichlone (trade names Phygon and Quintar) is a fungicide and algicide of the quinone class. It is a general use fungicide applied to fruits, vegetables, field crops, ornamentals, and residential and commercial outdoor areas. It is also used to control blue algae. Dichlone is not Persistent organic pollutant, persistent in soil and has moderate mammalian toxicity. Dichlone can be manufactured by the Chlorination reaction, chlorination and Organic redox reaction, oxidation of naphthalene. : References

{{reflist Algaecides Fungicides 1,4-Naphthoquinones Chloroarenes ...
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