Maintain Crystal Clear Water with 1KG Blue Sparkle Chlorine Granules! Keep your spa or swimming pool water clean, hygienic, and safe with these powerful stabilised chlorine granules. Disinfect Pool and Spa Water. Health First: Maintain a healthy swimming/bathing environment with free active chlorine (FAC). Eliminate Harmful Organisms: Say goodbye to harmful bacteria and organisms. Fast Dissolving: No more waiting around for hours for tablets to dissolve. Your spa or swimming pool water stays clean, hygienic and healthy. Included with the granules to help you select the correct amount to apply for the desired increase in chlorine level. Designed especially for Mspa hot tubs but can be used for any swimming pool and all home spas. ISO9001 certified. Easy to use with clear instructions provided on bottles. Large bottles for long lasting use.