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Thread: Safe rock?
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post #1 of (permalink) Old 02-08-2010, 05:39 PM Thread Starter
Planted Tank Obsessed
Join Date: Jan 2010
Location: New York City
Posts: 476
Safe rock?

Is this rock safe for aquarium use? I found it near my apartment building. I googled rock types and this looks sort of like Quartz diorite.

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