General description The 500g Filter Balls are a reusable and eco-friendly alternative to traditional pool filtration sand. Made from 100% polyester, these ultra-light balls offer excellent durability, water permeability, and drainage. They effectively filter impurities from water, ensuring a cleaner swimming pool. Technical specifications Material: 100% polyester Weight: 500g Equivalent to: 50kg of pool filter sand Usage Ideal for swimming pool cleaning and filtration systems Suitable for aquariums and filter pumps Efficiently captures microscopic suspended matter Other information Highly elastic design for quick and powerful filtration Low energy consumption and long service life Easy to replace and requires less backwashing compared to sand