Microbe-Lift/Barley Straw Pellets are a safe and cost effective pond conditioner. Natural barley straw and peat has been processed and packaged to make them easy to apply with no mess. Specially made for landscaper and pond service contractors, costs less than bales, recommended for use with all microbe-lift. The direct placement in a pond enhances substrates and the decomposition process starts immediately. It buffers the ph, and provides a slow, steady release of natural ingredients by natural, biological activity. Provides a slow steady release of beneficial ingredients through natural activity. Works years round. 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.: Size: 40 lb.