Didn't read the whole article in the link but did they test the water for contaminants (the containers actually leaching)? 
  
As for IO, I had cyano when I started, but I'm still using IO and haven't had any for years. The outbreak I attribute more to just being a SW newbie; using tap water, over feeding, circulation just a few MJ1200 in a 75g, than the salt mix. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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