As barley straw slowly ferments or rots, it produces a natural extract which has been proven to clear pond water. While effective, this fermentation process has always been slow and messy requiring the barley to be added in the spring. Designed to eliminate these steps CrystalClear Barley Extract is fermented under ideal conditions capturing the powerful, all natural barley extract, allowing it to work immediately out of the bottle with no mess. Use every two weeks.
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