Kullanıcı sayısı ve kullanım sıklığına göre spa boşaltma ve doldurma aralığını ve başlangıç kimyasallarını hesaplar.
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.