New England Spas FREE SHIPPING ON ORDERS $200+ Account Checkout Cart Sauna Accessories Water Care Products Elemental Water Care Products (Chlorine) Elemental Water Change Supplies FreshWater Salt Water Care Products FreshWater Salt Water Change Supplies ACE Water Care Products ACE Water Change Supplies Bromine Water Care Products Bromine Water Change Supplies BaquaSpa Water Care Products BaquaSpa Water Change Supplies The Natural Water Care Products The Natural Water Change Supplies Cleaning Products & Supplies New England Spas Brand Filters Sundance Spa Filters HotSpring Spa Filters Jacuzzi Spa Filters Swim Spa Filters Filter Cleaning Products Hot Tub Accessories Covers & Cover Lifters Fragrances & Aromatherapy Steps Pillows & Jets Hot Tub Add On's Hot Tub Services Filters Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Water Care Products > Calcium Booster Our Price: $11.99 Description Increases water hardness levels on a fresh refill. Note directions for amount application. Limit three per customer. Related Items Spa Up Renew (Shock) 2.2lbs The Natural Ouster Hot Tub Cleanse Our Price: $11.99 Add Our Price: $30.99 Add Our Price: $39.99 Add Our Price: $39.95 Add SeaKlear Defoamer with Clarifier ScumRay (2 Pack) Renew (Shock) 5lbs Bright & Clear Our Price: $29.99 Add Our Price: $59.99 Add Our Price: $66.99 Add Our Price: $24.99 Add