ScaleSafe is ” The Proven Hard Water Treatment Solution” – ScaleSafe acts as a scale inhibitor by distorting the almost perfect cube shape of calcium carbonate as it precipitates out of solution. By distorting the uniform shape, it will not allow the calcium carbonate to build up (deposit) on itself. It will also over time remove existing scale in the system. Furthermore, it increases the solubility of scale causing minerals. This helps keep them in solution as opposed to depositing as scale.