Regal 29-60216-90 900g Brom Granules (Bromine) is a practical easy to use sanitizer for spa water. It rapidly and completely dissolves to provide effective bromine disinfection without cloudy or insoluble residue in the water. BROM GRANULES is a superoxidation treatment to rid spa water of organic waste such as perspiration, body oil, cosmetics that tend to cloud water.