SKU: 42636BIO

SpaGuard Spa Calcium Hardness Increaser 12oz

SKU: 42636BIO

SpaGuard Spa Calcium Hardness Increaser 12oz

$7.99

SpaGuard’s Calcium Hardness Increaser enables spa owners to increase their calcium hardness with this easy to use granular formula, which will boost your calcium hardness to above the danger zone, where low levels cause extensive corrosion of plumbing, jets, fixtures, and tub surfaces.