The Planted Tank Forum - View Single Post - Can someone tell me what type of rock this is?
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post #2 of (permalink) Old 05-11-2007, 03:43 PM
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It looks like some sort of igneous rock (granite, basalt, etc.). Your best bet would be to go to a local landscape supply place and see what they have that you like.

I just took a walk in our construction yard and found several that would work ranging from purple to black to grayish-green. Just be sure to stay away from limestone as it will raise your pH.
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