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laynframe View Drop Down
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Joined: May 17 2009
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Points: 1062 		Post Options Post Options   Thanks (0) Thanks(0)   Quote laynframe Quote  Post ReplyReply Direct Link To This Post Topic: Black sand
    Posted: January 10 2011 at 1:58pm
I have herd black sand will not support life to allow bio filtration, is this true?
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SGH360 View Drop Down
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Joined: April 04 2010
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Points: 1786 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SGH360 Quote  Post ReplyReply Direct Link To This Post Posted: January 10 2011 at 1:59pm
Any type of substrate is good for bio filtration. It just will not work as a buffer.
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MadReefer View Drop Down
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+1^
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Mark Peterson View Drop Down
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Points: 21436 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark Peterson Quote  Post ReplyReply Direct Link To This Post Posted: January 10 2011 at 4:48pm
These days, now that we are all familiar with Alk and Ca and how to keep them in line, the use of aragonite substrate is less important. Ordinary silica sand, though not ideal, works okay.

I have a Hawaiian black sand tank but the bottom 1/2" is Utah Oolitic so it gets the natural Alk and Ca (buffering) from that.
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laynframe View Drop Down
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Joined: May 17 2009
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Points: 1062 		Post Options Post Options   Thanks (0) Thanks(0)   Quote laynframe Quote  Post ReplyReply Direct Link To This Post Posted: January 10 2011 at 6:39pm
So would it be a good idea to put natural sand over the black sand to get the buffering capability?
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