Quote:
Originally Posted by scuba guy ron
I have had nitrates at 10-20ppm for 2 years now and have had no issues. My zoas and palys are growing well. CrazY thing is I have a beautiful sps of tyree sunset monti that I've heard only colors up with pristine water. When I got it a year ago it was a 1in frag. It has since grown to 6in and is super colored orange and green. I always had heard nitrates were bad and I think they are if they Āre in excess. Imo below 30ppm is fine for me.
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30 to 40 ppm is fine for me, 4 years now.