BioGuard Balance Pak 300 (5.5 lb)
<div style="text-align: left;"><strong>[Product Information]</strong><br>
<ul>
<li>For raising calcium hardness levels</li>
<li>Dissolves quickly</li>
<li>Protects pool equipment from corrosion， plaster etching and wrinkling of liners.</li>
</ul>
</div>
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