I would add more flow if you are going to have sps. I was running 2 fluval 204s my sump and 3 power heads and I still wanted more flow. Also are you going DSB or just a normal sand bed you might want to cut some sand and add some LR.  Just my two cents. 
 
 
Brad 
		
	
		
		
		
		
		
	
		
		
	
	
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