Coral issue... I need some hep with the cause, Please!

[Jeff_H]

I've had this coral in my tank for over a year now, and it's been doing great until about a month ago. The tank parameters are all in the normal range and stable. The only issue I've had was a high tin level on my latest ICP test, but I believe I found a cause and have done two large water changes (70-80%) a couple of weeks ago. The tank is mixed with both SPS and LPS and I run carbon 24X7 and change it every two weeks. I can't seem to ID this issue or tell if it's a disease, chemical warfare, or something else. it almost looks like a fungus that is slowly spreading over the coral. I even tried to frag part of it, but that frag developed it too and is now dead.

Has anyone seen anything like this?

 

[HB AL]

If it’s the only one showing problems dip it in iodine and or a pest dip.

 

[Sidewyz]

I'm here to search for answers for a coral issue and I'm seeing multiple recommendations to not run carbon continuously. Like you, I run carbon 24x7 and am having issues with coral dieback.

 

[Jeff_H]

Thank you both for the feedback. I would consider dipping the coral, but it's encrusted to the rock and would be impossible to remove. I guess I could frag it again and do the frag and see if that makes a difference. Regarding the continuous Carbon, I've been running 24x7 for over a year with no issue. I guess I could try shutting it down for a while, and see if it makes a difference.

 

[HB AL]

I always ran carbon 24/7 for 30+years but recently stopped using it. I never noticed a difference between using it and the last couple months of not using it, if your having problems with just one coral I doubt it’s the carbon use. Frag the good spots, give the frags an iodine dip and mount them away from the location they originally were and see what happens,if you get multiple frags spread them around the tank. Sometimes one coral out of fifty in your tank will decide to just succumb to some unexplained reason. Just part of the deal.