US Water Big Blue Calcite Replacement Cartridge 4.5″ x 20″ | USWF-4520-PH
$75.10
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4.5″ x 20″ Calcite cartridge is used to neutralize acidic water (raising the pH), reducing the leaching of metal plumbing components, and for use post RO to raise TDS, in case the plumbing is copper and leaching of the copper is an issue.
Capacity: 24,000 Gallons
Flow Rate: Up to 4.0 GPM
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