I agree with Doug.  If you can't go tall, go wide.  That said my CS6-3 is tall and I think actually outperforms my CS8-1 tho.    
 
If you notice in those pics on that site, the shorter skimmer seems to be only half full of bubbles, while the tall one is just filled !  That's what my CS8-1 now is like, and I can't really lower the sump any more.  I am thinking about setting it up on something.  Doug, do you think that would work? 
		
	
		
		
		
		
		
	
		
		
	
	
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