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Old 10/17/2004, 10:12 PM
booc booc is offline
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Join Date: Oct 2004
Location: San Francisco Bay Area
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Black crushed coral

I wouls like to use a black substrate in my fish only tank. My local fish store has a fine black gravel, but warned me that it is not a PH buffering substrate like crushed coral. Does anyone know if black crushed coral or another substrate that is PH buffering is available ? Is this even an issue(using non buffering gravel as a substrate?
Thanks in advance for your help!!
Old 10/17/2004, 11:46 PM
mordibv mordibv is offline
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Join Date: Feb 2002
Location: Greenville
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There is a variety of sand known as Fiji black sand .I think it is composed of araganite and volcanic rock .. ..Caribsea Tropical Isle Tahitian Moon doesn't affect ph so I apt to guess it has no real buffering capacity . If you are changing water on a good schedule that should help with buffering ..check it out via

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