Thanks for all the good advice and for sharing your experience. At this point I’m going to stay the course with biopellets, and add in Microbacter since I’m already following that path, plus nopox still has me apprehensive. Hopefully it works, but still open-minded in case it doesn’t.Also to note, long time ago I tried dosing vinegar and just like you did nothing to lower my 50 to 60 ppm nitrates and went to really high dose and corals suffered. So stopped. But tried again with nopox but learned needed to kikick start it with bacteria and boom worked. I wished I knew to dose bacteria the first time with vinegar which is another carbon dose. Wish you luck