1. quality service: We offer comprehensive advice and customer service. If you have any questions about the filter balls or their usage, feel to contact us. We will promptly address all inquiries regarding filter balls for sand filter systems. 2. Environmental benefits: Filter balls are washable and reusable. They can be cleaned by machine or hand, and washing in a washing machine prevents clumping. Pool filter balls have dust absorption capacity, ensuring longlasting durability and reducing the need for backwashing. You will experience clear water results after the first use. 3. Universal application: Each pool filter ball has a diameter of 5060 mm and a total weight of 1300 g. They are compatible with various sand filter systems, do not clog the system, and are suitable for saltwater environments. Beyond swimming pools, they can also be used in aquariums, ponds, and more. Easy to handle, these filter balls work with any standard filtration system, delivering outstanding filtration results. 4. 3D deep filtration: for garden pools, swimming pools, filter pools, or aquarium cleaning. The 3D depth filtration ensures water clarity. With thorough pool maintenance, the use of flocculants can also be reduced. These filter balls for sand filter systems can trap fine particles as small as 1.5 m, achieving filtration efficiency four times higher than traditional filter media.