Thats what is good about cuprimine it is not full blown copper, and I have treated my cowfish 2 times with it. I also learned a valuble lesson about haveing a qt tank, treat every fish you buy even if it does not look sick. It is well worth it in the long run, that is if you care about your fish. 
		
	
		
		
		
		
		
	
		
		
	
	
	 |