500g Filter Sand Quartz Sand Filterballs Sand Filter Alternatively Pool Filter Properties: This product has good water permeability and breathability. Contains harmful substances, does not affect the water quality. Durable and to cleaning. Can be reused, dirt can be washed. Suitable for any agricultural environment (sea water, fresh water may be). It can be used to filter sand and pollutants into swimming pools. Their filtration results are more accurate because they can filter particles in pool water to a size of 1.5 microns. The use of filter balls can significantly improve the quality and hygiene of the pool. filter for swimming pools replaces sand Excellent microparticle filtration Made of polyethylene and machine washable Product description: Pool filter Ball is the filter for swimming pools, a perfect substitute for traditional sand. A 700 g package corresponds in its filter capacity to a sandbag of kg. Fiber Ball is made of polyethylene. The fiber mix guarantees not minimal mass and low weight but also excellent microparticle filtration. Unlike sand, it does not harden or clump during use. Easy handling due to low weight. Does not damage or damage seals. to pool chemicals. Durability guaranteed. Machine wash. Specifications: Material: polyester color white Performance:, high temperature resistance, Adsorption rate: 98 (%) Anti-stress: 4 (kgf) Density: 0.1 (g / cm3) Porosity: 86 (%) Wear rate: 1 Hardness: 1 Chemical composition: C Hydrochloric soluble rate: 1 (%) Size: 40 mm Delivery content: 1 x 500g filter ball