Haviland Durachlor Hardness Increaser
$24.99
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The Durachlor Hardness Increaser product is used to raise the total calcium hardness level in swimming pools. If proper calcium levels are maintained you can prevent the etching, pitting, and similar problems to the surfaces of plaster, masonary, and concrete pools. Raises calcium hardness levels Prevents surface corrosion Chlorine based
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$17.99
$24.99
(+$7)