Pool & Spa World Water Balance Calculator Water Type Spa Swim Spa Pool Water Volume (litres) Current pH (Target range: 7.2 - 7.8) Current Alkalinity (ppm) (Target range: 60 - 150) Current Calcium Hardness (ppm) (Target range: 100 - 250) Current Free Chlorine / Bromine (ppm) (Target range: 2 - 6) Calculate Download PDF Disclaimer: The results provided by this chemical calculator are for guidance purposes only. Always test water with appropriate kits before adding chemicals. We are not responsible for any damage, injury, or issues arising from the use of this calculator. Follow all chemical safety instructions and local regulations. How to Apply Chemicals Atrticle
