FWIW, I'm on PL now too for a couple a months now (started in late Oct.). I saw an almost immediate reduction in nitrates. I now run zero or near-zero on all tanks thanks to this, so I'm pretty happy with it. 
		
	
		
		
		
		
			
				__________________ 
				 -- Tony 
 My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills.  Whee! 
 
			 
		
		
		
		
	
		
		
	
	
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