Swimming Pool Filter BallsFilter balls for sand filtration systems are made of fiber, environmentally friendly material with good durability, water permeability, recyclable, does not pollute the environment. Strong Cleaning AbilityThe diameter of the filter ball is about 5cm. Pool filter balls are lighter and more efficient than traditional filter sand, unlike sand, the filter ball does not block your filter. Premium filter media extends filter life and is a perfect replacement for filtration sand, filtration glass and other media. Easy Cleaning Filter balls can be reused. Regular cleaning, the filtering effect becomes better. Our filter balls not only remove surface impurities from the water, but also filter grease and the smallest dirt particles from pool water. It is suitable for filtration of swimming pool sand filter system, aquariums, sand filter system, swimming pool, etc. Reusable The filter balls can be washed and reused. Thanks to machine and hand cleaning, it can be machine washed without caking. Premium filter media extends filter life and is the perfect replacement for filter sand, filter glass and other media. No more sand floating in the swimming pool which can be swallowed by children or hurt their eyes. Wide Range of Applications Filter balls for swimming pools, the filter balls are suitable for all filtration systems sand pools and common pool types. These filter balls for sand filtration systems are perfect for summer swimming pool sand filters and other water filters. For swimming pools, aquariums, sand filtration systems, swimming pool accessories.