When I bought it it didnt say reef safe on the bag. But I took a chance anyway. It says aquarium safe just not saltwater safe. So I think its kind of a "buyer beware" type of situation. I suffered no ill effects aside from the oxidizing in my tank and magnetism. I personally asked many people on many forums their experience with it and no one told me of any crashing etc. Just the same issues I reported here. 
		
	
		
		
		
		
			
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				I'm not 'fallow' you must be talking about my tank!
			 
		
		
		
		
	
		
		
	
	
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