Greetings from vietnam

Welcome to reef2reef!!!!!
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Don't know what NO4 is (Nitrate is NO3, nitrite is NO2, phosphate is PO4, but 200ppm would be incredibly high), but it looks like there is a nutrient issue of some kind. I'd increase filtration or decrease feeding in the longer term but start with a big water change or two to normalize those numbers.

Also your magnesium is low - I would aim for 1200 -1400 ppm - and this will negatively effect corals like montipora first.
 

WHEN REEFING GETS TOUGH, WHAT KEEPS YOU MOST INVESTED?

  • My livestock depends on me, so I keep showing up for them

    Votes: 17 51.5%
  • I look for small signs that things are improving

    Votes: 3 9.1%
  • I want to figure out what’s going wrong

    Votes: 1 3.0%
  • I remind myself that rough stretches will pass...just keep reefing

    Votes: 7 21.2%
  • I lean on other reefers for advice or encouragement

    Votes: 0 0.0%
  • I simplify, step back from tinkering, and give the tank time

    Votes: 2 6.1%
  • Honestly, sometimes I wonder if I want to keep going

    Votes: 2 6.1%
  • Other (Post in the comments)

    Votes: 1 3.0%
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