SpaPure Chlorinating Granules Chlorinating Granules is fast acting in water. Features Effective Chlorine Treatment Long Lasting Benefits Effectively cleans the spa and clarifies cloudy water. Dissolves rapidly in water. Easy to use product that can be used to clean and shock. Perfect for smaller spas or spas with sporadic use. Applications Apply to the spa while the water is circulating After filling or when using to super chlorinate shock your spa. Add 1 ounce for every 500 gallons of water to the spa Maintenance: Add as needed to maintain 1 to 3 ppm of chlorine SpaPure Spa Oxidizing Shock Over time, spa water can look dull and the chemicals in the water don’t work as well as they should. Use Spa Oxidizing Shock as a fast acting, quick dissolving, non-chlorinated oxidizing treatment. Benefits No pre dissolving necessary. Spa entry can occur shortly after adding it to the water. Applications Apply to the spa while the water is circulating. Apply three tbs for every 250 gallons directly to the water. Typically add this product weekly or more frequently if the spa is used often. Made in the USA.