Descriptions: 【New Upgrade for 2024】Using advanced fiber material, it can provide excellent filtration effect. The filter balls are lightweight and easy to use and can be added to any pool or aquarium filter. They last longer than traditional filter media, require less maintenance, and are reusable, making pool cleaning and maintenance a breeze and giving you more time to enjoy your pool. 【High Efficiency Filtration】Our filter balls provide excellent filtration efficiency, 1.5 pounds of filter ball is equivalent to 50 pounds of filter sand. 3.0 pounds of filter ball is equivalent to 100 pounds of filter sand. Even tiny debris and pollutant particles can be captured, making your pool water as clear as crystal. .