An affective Algae Control Program should be teamed up with a vegetation control program.
In the past we have worked with “Barley Straw” as a natural control for algae and found it ineffective. Our primary control product for algae prevention is coppercarbonate or trade name “Cutrine”. Monthly treatments of Cutrine combined with shades will keep ponds clean of algae bloom. One word of caution, coppercarbonate is toxic to catfish and koi .