Every few months I clean it right out and vacuum it with shop vac and and clean the equipment. But I walk up to mine and stand above it so its easy to do. I drilled my sump bottom when I got it so my water changes a done right from the bottom of the sump so I chase any debris down then.  
 
I do it more for aesthetics than anything. 
		
	
		
		
		
		
			
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				360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
 360 Reef Tank 
			 
		
		
		
		
	
		
		
	
	
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