Spa Stain and Scale prevents calcium and mineral scale build-up by deactivating iron, calcium and other minerals. It is specifically formulated for spa water.
8oz (240mL) per 200 gallons (760mL)
1oz (30mL) per 400 gallons (1,500L)
1. Add 8oz (240mL) per 200 gallons (760L) directly to spa water
1. Add 1oz (30mL) per 400 gallons (1,500L) directly to spa water
** If water hardness level is above 500ppm, double the recommended dose