Preferred Application:
With circulation pump on and jets running, apply one tab per 300-600 gallons of spa water directly to the filter well and allow tablet to fully dissolve. Test water with a test kit or test strips and repeat at 30-minute intervals until a residual of 3-5 ppm of available chlorine. Verify tablet is dissolved and free chlorine residual is 3-5 ppm before re-entry.
Direct to Spa:
With circulation pump on and jets running, apply one tab per 300-600 gallons of spa water directly to the spa and allow tablet to fully dissolve. Test water with a test kit or test strips and repeat at 30-minute intervals until a residual of 3-5 ppm of available chlorine. Verify tablet is dissolved and free chlorine residual is 3-5 ppm before re-entry.
Note: Brush any undissolved material off surface of the spa to avoid surface damage. Re-entry into treated spas is prohibited above levels of 5 ppm to avoid risk of bodily injury.