Microbe-Lift Barley Straw Pellets Plus For PondsProduct Description Microbe Lift Barley Straw Pellets Plus For Ponds Ingredients Concentrated Barley Straw Enriched With Peat & Humic Acid. Weed Free. Treats 500 Gallon Pond Up To 7 Months And An 800 Gallon Pond For Up To 5 Months. Each Bag Includes A Graduated, Dry Measure Cup With Both Oz And Ml Measures. Key Features Treats 1000 gallon pond for up to 9 months, or a 2500 gallon pond up to four months Specially made for landscaper and pond service