Dirty Sandbed
			 
			 
			
		
		
		
		Been hearing recently that a good, self-sustaining sand bed does not need sifter stars or fish to keep it healthy and clean, so I did not mourn the loss of my star. Now my sand is filthy and the only movement within it is from the conch. What should I do? 
		
	
		
		
		
		
		
	
		
		
	
	
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