Yes I am aware they are not a "matched pair" per say, I meant it as in 2 of something. I only had the opportunity to purchase one of each when I bought them.  
 
They got along fine for weeks, do you really think this is why? 
 
I have had same species pairs do the same thing. 
		
	
		
		
		
		
			
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230 mixed reef / 230 gal sump/fuge
			  
		
		
		
		
	
		
		
	
	
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