SpaGuard Rapid-Dissolve Stain and Scale Control hot tub chlorine or for adding a mid-season

or for adding a mid-season water treatment boost to maintain sparkling water

which is designed for pools from 5

Turn jets or aeration off during application

Does this replace sanitizer

Keep the pump running during application

SpaGuard Rapid-Dissolve Stain and Scale Control hot tub chlorine or for adding a mid-seasonSpaGuard Rapid Dissolve Stain & Scale Tabs 1. 25 lb Fast Dissolving Stain and Scale Protection for Spas and Swim Spas SpaGuard Rapid Dissolve Stain & Scale Tabs help protect spa and swim spa surfaces, plumbing, heaters, and equipment from stain and scale problems. These convenient tabs are designed to control metal based staining and scaling, including stains caused by iron, copper, and manganese, while helping reduce scale formation caused by calcium