The Planted Tank Forum - View Single Post - Are these rocks safe for a planted tank?
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post #20 of (permalink) Old 02-09-2013, 01:32 PM
Planted Tank Obsessed
Join Date: Dec 2011
Location: Windsor Locks, CT
Posts: 300
philemon716, your rocks look to be granite schist. I am not sure if they will change your ph but they do look good.

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