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Importance of Aragonite
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The Old Salt

Joined: 01 Apr 2003
Location: Alabama

PostPosted: 2005.04.15(Fri)15:22    Post subject: Reply with quote

Aragonite sand has another use that most people overlook.
Other forms of calcium are useful for buffering pH and whatnot, but those other forms of calcium have a different molecular shape than aragonite's. The shape of the aragonite molecule makes it much more bio-available than the other stuff. That means that your corals and other inverts can make much better use of it that they can of the other stuff like dolomite and crushed coral, etc...
We've been using aragonite without even thinking about that anymore for years now, but threads like this one show that we could all use the occasional reminder. If you just want fish, than many types of substrate will work just fine. If you want a reef tank, though, then you want aragonite.
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