BARLEY STRAW EXTRACT 16-oz SAVIO: BARLEY STRAW EXTRACT 16-oz $19.50 SKU: SAV460 QTY: Click here to save 5% off of your order! Savio Natural Barley Extract - 473mL Bottle (16oz) Treats up to 12,500 gallons of water 473 mL extract is the concentrated equivalent to twelve barley pillows. SAVIO Natural Barley Extract™ performs better than messy decomposing barley straw. Better Results in a wide range of temperatures and pH levels. Safe for fish and plants. Made from extract of barley straw. See results in 2-3 weeks. Application Rate: First 2 weeks - 1 oz weekly per 125 gallons Maintenance - 1 oz weekly per 750 gallons Ingredients: Natural extract of barley straw. No herbicides or synthetic chemicals added.