1st time RTN

[sphelps]

Like others I also know what you're going through, I recently lost a few corals from STN, some pulled through but are much smaller than before.

I find both STN and RTN to act like an infection and even fraging healthy sections rarely saves the colony.

Usually the cause is difficult to find as it tends to be a result from multiple sources rather than a single one. These corals can usually survive one or two stresses but more can serve to be too much.

I would recommend dosing amino acids as it can improve coral vitality. I have had very good experience from using Zeovits amino acid concentrate. Checking water chemistry would be good for sure. In addition, when you said you could smell the corals, to me that suggests poor skimming. What are you running for a skimmer and have you been maintaining efficient skimming?