I have a refugium in my sump so I don't empty it out for cleaning either. I do take a scrubber pad to the walls and bottom of the skimmer and return chambers every week or so but that's about it. I keep crabs in both chambers so all I'm scraping is diatom film, bacteria blooms etc. The refugium gets left alone. 
		
	
		
		
		
		
			
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				I have to go out and buy more snails for my hermit crabs.
			 
		
		
		
		
	
		
		
	
	
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