Lot de 9 boules minérales à ions négatifs

suitable for all our ion filters, the first filter removes 99% of bacteria, the second filter makes the water low in alkalinity, the third filter acts on bacteria and impurities. Filtraton Sterilization: Removal of impurities in water and bacteria. SPA anion can effectively filter sterilization. 3 kits: It is enough for one year use, we recommend changing the third filter every 6 months, and the other filters every 3-5 months. What You Get: 3 Mixed Stones, 3 Grey Stones, 3 White Stones.