Features: Reduced tank maintenance: By suppressing the growth of organic matter, this solution decreases the need for frequent draining and scrubbing. It allows for a more efficient water management routine, saving you from the hassle of hoses and wasting water. The use of barley straw treatment makes it easier to maintain water quality without constant cleaning. Convenient drop-in design: The pre-filled burlap bags are designed for immediate application without the need for measuring or mixing. Simply place the bag in the water feature and allow it to function. Saving you significant time on routine maintenance chores. This design ensures effortless use of barley straw treatment in your water feature Material: barley straw Color: natural Size: about 3.94 x 5.51 inches/ 10 x 14 cm Package includes: 2 x Barley straw treatment Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays