I have a pond that is only 1/4 acre and only 6 feet deep this is definitely the best product for algae I've tried several. With Alligare I treat the pond twice a year and it stays algae free.
Sprayed this stuff on a mature Pokeweek (3-4 ft tall and flowering) about 3 weeks or so later and the plant is decimated! Love this stuff, going to do my entire yard next