Barley Straw Extract promotes cleaner clearer water and reduces pond maintenance. It has all the benefits of barley straw, but starts to work instantly without the messy clean up of decaying barley straw bales in the water. Safe for live plants, fish and wildlife. > Organically Promotes Cleaner Clearer Pond Water > Concentrated Formula to Reduce Pond Maintenance > Safe and Non-Toxic for Fish, Plants and Wildlife Shake well before using. Before administering any water treatment, it is wise to check your water quality levels to ensure they are within their acceptable ranges. Barley Straw Extract is an organically formulated extract of barley straw to help promote cleaner clearer water and reduce pond maintenance. This long lasting formula is safe and non-toxic for plants, fish, and all wildlife. Apply Barley Straw Extract weekly according to the dosage charts located below. Add dosage directly and evenly throughout the pond or water garden. FOR THE FIRST 2 WEEKS: 1/2 oz. treats 63 gallons, 1 oz. treats 125 gallons, 4 oz. treats 500 gallons, 8 oz. treats 1,000 gallons. AFTER THE FIRST 2 WEEKS: 1/2 oz. treats 375 gallons, 1 oz. treats 750 gallons, 4 oz. treats 3,000 gallons, 8 oz. treats 6,000 gallons. WARNINGS! For ornamental pond use only. Keep out of reach of children. Not for human or drug use. Although harmless, do not swallow. Do not use on fish intended for human consumption. Info from Aq Products