根据使用人数和频率计算水疗池换水周期、所需水量和启动消毒剂量。
Enter your spa volume, typical number of bathers per session, and how many times per week you use it. The calculator uses the standard drain-and-refill formula to determine when TDS buildup requires a water change.
The recommended interval is calculated as: volume ÷ (bathers × uses/week ÷ 7 × 3). More bathers and more frequent use means more frequent water changes. A minimum of every 7 days is recommended regardless of usage.
A partial 50% drain and refill at half the recommended interval is a good compromise — it cuts water usage in half while keeping TDS under control. Always add a startup shock dose after refilling to bring chlorine to 10 ppm.
标准公式是（加仑数 / 3）/ 每日使用人数。对于一个300加仑的水疗池每天2人使用，应每50天排空并重新注水。
最终水会被溶解固体（TDS）如皮肤细胞、乳液和化学副产品「饱和」。此时水变得浑浊，化学品失去效力。
使用专用的水疗池表面清洁剂或稀释的醋溶液擦拭外壳。在重新注水之前确保彻底冲洗并擦掉任何残留物。