You can give it an iodine dip. What fish are in the tank, and what are the parameters? What is the coral next to it? It looks like it may have been stung.It started about 5-6 days ago it was with 1-2 spots in about a weeks time the coral has lost over 15% of its tissue
Worried if it spreads to others , what treatments can I do I really want to save it was a ocean wild one in a 6 months old tank
I have given it an iodine dip once 3-4 days ago
What lights are you running? Most brain corals don’t need a ton of light, and you wouldn’t see that brown infected area like that if light were the issue. If it’s too much, they’ll typically turn pale and fade away (bleaching), if it’s too little they’ll get darker (browning). I don’t know if I’ve seen any sort of brain coral get too little light under any sort of coral grade light. What are your parameters, and how long has the tank been running? Has this spread more today? It almost looks like brown jelly disease, but that tends to kill coral within hours or a day at most rather than over multiple days
