Applied Biochemists Swimtrine Plus 1 Gallon Algaecide Green Mustard (1 Pack)

Swimtrine Plus algaecide is a highly concentrated copper based algaecide especially designed to kill mustard and green algae. When used regularly, it also prevents the regrowth of all types of algae. Swimtrine Plus algaecide contains 9.3% active copper content - making it America's most concentrated fast-acting algaecide.