Fiber ball is designed to replace sand other filter media.With significant improvement of filtration effects and ease of use, fiber filter ball are widely used in swimming pool, pond, aquarium for its excellent filtration effect. And Filter balls are also optimum filter media for municipal drinking water and sewage water filtration system, rain water system, industrial effluent water treatment. Fiber filter ball provides a more efficient, deeper clean than traditional sand. In addition, it provides for less issues with clogging and backwashing. Lighter than any other option on the market, fiber filter Balls take the stress out of cleaning your pool and filter.