Filter balls for sand filter systems: filter balls are lighter than conventional filter sand, easier to fill and can be reused after cleaning. Filter balls pool 700 g = 25 kg filter sand. Significant filter effect: the pool filter balls are made of 100% polyester fibre. It is an ultra-light, environmentally friendly material with a fine fibre structure that can effectively filter tiny particles and impurities to achieve high-quality filter effects and ensure the quality of clean water, has a faster filtration speed and a higher adsorption capacity. Easy to clean and maintain: please do not expose the pool filter balls to direct sunlight when using. With filter balls mesh and is machine washable. The filter effect can be restored by cleaning with a small amount of washing liquid at 30 water temperature, reducing maintenance costs and problems. Filter balls pool: filter balls are more energy efficient than conventional filters and can be reused after cleaning. Filter balls are not only used for swimming pool cleaning and filter systems, but also for swimming pools, aquariums, filter pumps, aquariums and other media. Crystal clear water: pool cleaning and no more sand or dirt in the pool. Whether pool, in the garden, swimming pool, swimming pool or aquarium cleaning. First-class filter results with less energy consumption with the pool filter balls.