Water Wych a 100% natural fountain cleaner that is 98% recyclable. A unique unit that when placed in the fountain, absorbs all the impurities in the water. An all natural water conditioner and algae control treatment that effectively reduces string algae. Cleans your fountain without chemicals, results within 3 to 4 weeks. No straw. Safe for aquatic plants and fish. Dimensions 12"x4"x2".