Anjon Rescue Barley straw extract does not kill existing algae, but it inhibits the new growth of algae. The extract, when exposed to sunlight and oxygen produces a chemical that inhibits algae growth. Rescue Barley Extract can help support proper equilibrium in water gardens, Koi ponds & lakes to help prevent unwanted floating debris and build up from forming on the ponds surface. Use Rescue Barley Extract together with Rescue beneficial Bacteria as part of your normal maintenance.
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