To effectively reduce floating, emerged and shoreline weed species while allowing desirable plants to colonize, Clearcast is the clear choice. Its selectivity makes Clearcast ideal for aquatic areas used for fishing and other recreational activities, while minimal irrigation restrictions allow Clearcast to be applied in a large variety of aquatic environments, including golf course ponds and irrigation canals and ditches. Clearcast also uses less active ingredient per gallon than other aquatic herbicides and has shorter soil residual so you can plant desirables quickly.