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A unique, worldwide patented bio-product consisting of bacteria cultured on barley straw, enzymes and activated barley straw. It is easy-to-use, makes no mess, requires no measuring, contains no chemicals, and has no risk of overdosing as you simply drop one water-soluble sachet of Nishikoi Goodbye Green water into the pond or filter every week. The barley straw extract will also clear up blanketweed.