Suggestions...RTN

[Bigfinn4]

Hi All...

I have a SPS coral that has developed RTN. Everything else looks fine.
3 days before I noticed this I went back to 10k lamps from 14k. I also got my top off water from a different LFS...actually, it smelled a little like chlorine...Someone recommended I frag the unaffected parts of the coral...looking for thoughts/ideas...thanks.

 

[microwave]

Have you noticed any ill effects to any other corals or livestock?

 

[MikeTR]

If that's the only effected coral start fragging off the good parts. I would bet it's from a change in the lighting without any acclimation (screening).