Filter Balls

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Filter-balls are made from polymer fiber. It is a direct replacement for traditional sand, making it suitable for above wood-fired hot tubs. Excellent filtering result, removing pa rticles Does not stick together or harden like sand does Very easy handling due to low weight Low cost, 350 g for an equivalent of 25 kg of sand Easy to dispose of with standard domestic waste Less pressure increase and energy saving Less repairs, no problems or defects on seals Resistant to swimming pool chemicals 350 g filter-balls = 25 kg sand Show more