From Wikipedia, the free encyclopedia

An algaecide or algicide is a substance 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 US and England

Synthetic algicides

Synthetic algicides include Copper sulphate, which is very toxic, and Polyquat.

External links

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