marine safe rock?
i found this rock... and there is a bunch more available. it looks like dead coral but i doubt it. it really doesnt look like lava rock, way porous and almost soft. have boiled it and cleaned it the best i can. whats the chance its marine safe. was thinking it would make a great base rock. its free and more than what i need is available.
Last edited by Reef Puffer; 01-25-2012 at 04:14 PM.
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