There's lots of opinions about Sump turnover, when I added my Frag Tank, I tee'd the return line, greatly reducing my sump turnover.  My Skimmer has more time to work the water, and the Cheato and Mangroves have a longer exposure time.  Originally the turnover was around 450GPH, now more like 300GPH.  I don't think I would lower it any more.  I use a SEIO 850 in the display, so I still have adequate Tank turnover. 
 
I used to think that the return pump was bad for pods, but now I'm not so sure, I've had two small Rics, and a small Yuma sucked into my return and fired out into the display.  All survived, unmarked. 
		
	
		
		
		
		
		
	
		
		
	
	
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