For me, I turn off my powerhead and aquaclear fuge. Use turkey baster on the rocks and sand. Once all the junk starts floating on water, I try to siphon out as much as I can. This is for a 10 gallon nano tho. :/ 
		
	
		
		
		
		
			
				__________________ 
				Maintaining Alk at 8 dKh since 2016...
			 
		
		
		
		
	
		
		
	
	
	 |