All rain water starts out soft, but by  the time it filters through rocks and soil, it contains disolved  minerals that make the water hard. Sullivan Corporation stocks  a variety of the highest purity softener pellets, cubes or solar salt available, each specifically designed to provide the best  water conditioning for commercial, industrial or residential  conditions: 

• Evaporated  (granulated) Salt (bulk or  bagged)   
• Evaporated Salt pellets  (bagged)  
• Solar Salt (bulk or bagged)   
• Solar Salt Pellets with  rust inhibitor (bagged)
• Northern and Southern Rock Salt (bulk or bagged)