I’ve added copepods twice in the three years of the two tanks.  Once just before I added Po (75 gal was 8 months old) and the second time was last year when I did the tank transfer.  Your tank is way bigger so it should be good? 
		
	
		
		
		
		
			
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				     Maggie
			  
		
		
		
		
	
		
		
	
	
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