SpaBoss Cal-rise

Keeping calcium hardness stable and in balance is one of the three important water-balancing steps. If your spa water has low calcium hardness, you can expect problems with corrosion of metal surfaces, such as pipes, filters, heat exchangers, underwater lights, metal screws, and hardware. That's where SpaBoss Cal Rise comes in, as it raises the calcium hardness in spa water and is completely soluble in water.