I think it depends on WHAT you are feeding... For instance... When I feed mysis, I turn the pumps and powerheads off so food gets down to all the critters, but when I feed BBS, I leave powerheads on and just shut off the skimmer (sumpless) so that the BBS is always moving around, not just sitting up at the top where the light is. 
		
	
		
		
		
		
			
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38 Gallon Custom Starphire, Remora Pro, 2 Seio 820's, 24" Giesemann Infiniti 1x250W MH + 4x24W T5, 60lbs Live Rock.
			 
		
		
		
		
	
		
		
	
	
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