It definitely could be dino’s as well.  This is common when nutrients are out of whack and a newly cycled tank.  You can try a blackout although I personally think it will just be one of those things you have to ride out.  Your tank just needs the time to balance out. 
		
	
		
		
		
		
			
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				300g Basement Reef - April 2018 
			 
		
		
		
		
	
		
		
	
	
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