Gray Coast, 10 kg / 22 lbs
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<b>[Product Information]</b><br>
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<li>All natural calcite substrate for all types of marine, reef, and tropical aquaria</li>
<li>Its chemical composition will assist in stabilizing calcium and alkalinity while preventing large pH declines</li>
<li>Unlike competing wet gravels, Gray Coast is sold dry and contains 35 percent more gravel than a bag of equal weight</li>
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