With this pack of filter ball, you can filter out the smallest impurities in the water, which will bring your clean and comfortable swimming pool back! Durable material: Made of PE, the water filter has a long life, lighter and more efficient than the traditional filter media. Reusable design: Being 100% reusable, the swimming pool filter can be cleaned by machine or hands.Convenient usage: Just pour them onto the machine to start filter, the pool filter balls are easy to use, but bring an efficient result.Efficient filter: These filter balls, made of polyethylene with 200ppm silver nanoparticle, can reduce 98% of the Escherichia coli bacteria and 99% of the staphylococcus aureus bacteria.Less backwash: Compared with the white filter balls, these balls require less back wash frequency.

• Colour: Blue
• Material: 100% Polyethylene (with 200ppm silver nanoparticle)
• Volume: 700 g
• Diameter: 50 mm
• Specifically designed to remove bacteria
• Filtering down to 3 microns
• Equals to 25 kg pool filter sand