Cutrine-Plus Liquid - 2.5 galA patented, concentrated liquid algaecide with a wide range of labeled use sites. Contains chelated copper which stays in solution to continue controlling a broad range of algae well after application. No water use restrictions following treatment. Labeled use sites include lakes, potable water reservoirs, farm, fish and industrial ponds, fish hatcheries and raceways, ditches, canals and laterals.