SpaPure Hardness Increaser - 1 lb

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Every body of water needs calcium in it. Too little calcium, water is corrosive and will damage the spa. Too much water will produce damaging and ugly scale. When levels are ideal you will prolong the life of your spa and provides the best bather comfort. If you have a softener, you need this product! Soluble concentrated flakes Prevents corrosion Helps prevent foaming Eliminates etching of delicate surfaces Show more