Kent Marine Phosphate Sponge, 1-Quart
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<b>[Product Information]</b><br>
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<li>Works in fresh and saltwater</li>
<li>Will not release soluble aluminum compounds into your aquarium</li>
<li>Product gets very hot when dissolved in water</li>
<li>Not for human consumption</li>
<li>Do not taste, swallow or breathe</li>
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