You will get an ammonia cycle and it will be measurable. 
You will than get a nitrite cycle and it will be measurable. 
Wait two weeks after you get a zero reading on nitrites and than add one fish at a time one month apart. 
Resist the urge to add more and too often because that is what leads to problems. 
		
	
		
		
		
		
		
	
		
		
	
	
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