live rock
			 
			 
			
		
		
		
		keep the rock in water and you shouldn't have to cycle very long-you will probably have some sponge die off with a quick air exposure.if it's a new tank ,you will have to wait for the bacteria to adjust.keep monotoring your water peramaters 
		
	
		
		
		
		
		
	
		
		
	
	
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