The HTH Pool Care Filter Sand with the product code SOLENIS 67120 is a high-quality pool filter sand designed to keep your swimming pool water clean and clear. Here are some key details about this product: Composition: The sand is made from crystalline silica, which is a natural material commonly used in pool filters. Purity: HTH provides the purest, most closely sized pool filter sand available. This is achieved through a rigorous washing and grading process. Compatibility: It is suitable for all swimming pools that use sand filters, including those with salt systems. Maintenance: For optimal performance, it’s recommended to replace the filter sand every 1.5 years for year-round pools or 3 years for seasonal pools. Function: The sand enhances filter efficiency, helping to clear cloudy water and maintain pool cleanliness. Remember to follow your filter manufacturer’s recommendations for using this filter sand. Regular replacement ensures your pool filter operates at its best!