Algaecide

Spraying algicide into a pond

Algaecide or algicide is a biocide used for killing and preventing the growth of algae.

Natural algicides

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 Agency (EPA) for use as a pesticide and its effectiveness as an algaecide in ponds has produced mixed results during university testing in the United States and England.

algicidal and fungicidal paint applied to a building

Synthetic algicides

Synthetic algicides include:

• benzalkonium chloride
• bethoxazin
• copper sulfate
• cybutryne
• dichlone
• dichlorophen
• diuron
• endothal
• fentin
• hydrated lime
• isoproturon
• methabenzthiazuron
• nabam
• oxyfluorfen
• pentachlorophenyl laurate
• quinoclamine
• quinonamid
• simazine
• terbutryn
• Tiodonium

External links

• National Pesticide Information Center (NPIC) Information about pesticide-related topics.