Extreme cleaning power: filter balls for sand filter systems have been specially developed for quick and easy pool cleaning. The filtration speed is four times faster than conventional filter materials and can filter out dirt particles up to a size of 1 micron, as well as grease in the water.Reusable: filter balls pool have a long service life and can be washed and reused. Compared to conventional filter sand, the filter ball is more comfortable and efficient and an energy and cost-saving swimming pool accessory.Suitable for various filter systems: Our filter balls for sand filter systems are easy to handle and can be used in any standard filter system. It can be easily achieved an excellent filter effect and is a good partner for swimming pool cleaning.Wide.