I agree 100% Tony.  I just can't read that test kit.  I still try to read it.  The crazy thing is your ability to see through the liquid is also determined by ambient light. 
Anyway.  I did notice huge improvements in coral when using K.  But I have stopped because of the inability to test 
 
J 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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