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					Originally Posted by  vanreefer
					 
				 
				Sound like a similar situation. I am doing water changes now to help with the No3. Don't use the zeolites and been using AF for about a year. I am in recovery mode after a huge STN of all my acros. 
			
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 I think Zeomix played a vital role on my system entering the ULNS as it absorbs Amonia before it turn into Nitrates.
I just did another test again today NO3 is 0ppm.
In your case, I would continue doing large WC to manage NO3. Im not sure how NOPOX works so I cant comment on that.