Nu-Clo Calcium Hardness
$24.95
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Nu-Clo Calcium Hardness Increaser For Pools calcium increaser & hardness Prevents corrosion in pools & spas This product will raise the calcium mineral level of pool water Maintain this level at 175 ppm (parts per million) in vinyl-lined or fiberglass pools and 240 ppm in concrete or plastered (marcite) pools
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