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#4
06-04-2005, 05:53 PM
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A word of warning, be careful with black sand as depending on where it's collected from, some black sands have a high volcanic iron content. I found this out when I added black sand from Costa Rica that was so high in metal content that I had shavings forming on my magnet.
The aquarium brands should be ok, but I would test just to be safe!
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cheers, Rich all that we do is touched with ocean, yet we remain on the shore of what we know http://www.advancedaquarist.com/2005/5/aquarium 
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