Brilliance Spa Brominating Granular 1.75lb Brilliance for Spas Brominating Granular 1.75# Dissolves completely with no residue for sparkling clear water Sanitizer for spa and hot tub water This product may be used as a super oxidation treatment to rid spa and hot tub of organic waste Rapidly and completely dissolves without cloudy or insoluble residue in water to provide effective bromine sanitization