Brand New 700g Pool Filter Balls Eco-Friendly Swimming Pool Aquariums Water Filters NEW Keep your swimming pool clean and healthy with these eco-friendly pool filter balls from Naisidas. The 700g capacity sand filter system is perfect for hot tubs, above ground pool, and in-ground pool. The set includes reusable filter balls that are easy to install and maintain. These pool filters are perfect for those who want to keep their pool water clean and clear without using harsh chemicals. The Naisidas brand is known for its quality products, and these pool filter balls are no exception. They are suitable for use in all types of pool setups, making them a versatile option for any pool owner