any southdown sand users outhere???
			 
			 
			
		
		
		
		Hi, 
 
Give it time (6 months) for the bacteria to build up on it or get a micron filter.  Its probably the extra fine particles in Southdown suspended in the water.  Hence, it won't harm your tank...its just a visual thingy. 
 
- Victor. 
		
	
		
		
		
		
		
	
		
		
	
	
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