SpaGuard Rapid-Dissolve Stain and Scale Control hot tub chlorine which is designed for pools

which is designed for pools from 5

Turn jets or aeration off during application

This cartridge is only for select hot tubs with the built-in FROG @ease In-Line System

For larger pools or visible algae treatment

SpaGuard Rapid-Dissolve Stain and Scale Control hot tub chlorine which is designed for poolsSpaGuard 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