LiquaGen Premium Garnet Gravel (15 LBS) is the essential foundation for all water treatment systems, designed specifically for salt-based water softeners, carbon tanks, and salt-free conditioners. This USA-made, high-density underbed material creates the support layer that prevents expensive filter media from washing out while ensuring optimal water flow distribution. Each 15-pound bag provides the ideal amount for standard 9-inch diameter tanks, making installation straightforward for both DIY enthusiasts and professionals. Unlike ordinary gravel, our premium Garnet material offers superior durability that withstands years of constant water flow and backwashing cycles. The uniform size distribution prevents channeling issues while supporting proper hydraulic balance throughout your system. Simply pre-wash before installation to remove any dust particles for immediate optimal performance. Water treatment professionals trust LiquaGen as the critical foundation that protects distribution systems and significantly enhances filtration efficiency. By creating even flow patterns and preventing media migration, this underbed gravel extends equipment lifespan while ensuring consistently cleaner, better-tasting water for your entire household. Invest in the foundation of your water treatment system with LiquaGen where quality water begins. Additional Details ------------------------------ Product description: 1/8? x 1/4? Washed Gravel Underbedding ? Using washed gravel in water softeners and water filters is important because standard gravel contains dirt and debris that can clog valves, pistons, injectors, and other components. Our gravel has been thoroughly washed and is intended for use in all makes and models of water softeners, water conditioners, backwashing water filters, and non-backwashing water filters. LiquaGen does not distribute or sell products to any 3rd party sellers on Amazon. This product is sold exclusively on LiquGen?s Amazon store. Other companies selling this product are counterfeits. Please make sure to purchase a genuine LiquaGen product for proper authenticity and warranty.