Use Vanishing Act calcium remover to create a softer, more enjoyable hot tub experience.  Help prolong the life of your hot tub and extend the amount of time between water changes.  Use during Start up, drain, refill or any time your hot tubs water hardness is high.  Vanishing  Act calcium remover  protects your hot tubs equipment by decreasing hardness and prevents the formation of scale on your heater and pumps.