Wow, i'm impressed.  Like others have said, nitrate/Phosphate would be nice.  But this is ment for all aquariums it seems, for a planted tank this would be nice.  I like it though, for 190 bucks it's cheaper than most par testers, and may give you a spectral plot graph according to the comments section. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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