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			 Maybe you can tell me the best way to turn these knobs. 
		
	
		
		
		
		
		
	
		
		
	
	
	A and B. I know what B does but maybe you know something i dont. ![]() For the intake. Does the depth matter? I've just added the extension for my 10 gallon tank. If it too much depth? ![]()  |