Adding PO4?

[crimper]

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.

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.