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			 Unless the clay used to make the tile is Barium Free I would not put it into an aquarium. The guys that make the ceramic plugs use a Barium Free Clay as Barium is toxic. 
		
	
		
		
		
		
			Cheers, Tim 
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	www.oceanfreshaquarium.com/foz-down.html - Foz Down - an easy way to eliminate algae outbreaks caused by Phosphate and bring back the fun of reef keeping.  |