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Old 05-20-2007, 03:46 PM   #5
Bear
Salty Pants
 
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Join Date: Jun 2006
Location: In a Big Yellow House
Age: 21
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yes, thats true, silica sand could prove to be pretty bad in SW tanks. It would cause diatom blooms whenever some silica leached out and because of how sharp the sand grains are it could be painful to bottom dwellers.
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