Is this a bacterial infection?

[Docdiggy]

I've had a few problems lately after using more rox .08 than I should have. All acans have been dying like they got hit with a plague and this guy was awesome looking. I'm thinking it's some kind of infection that took over. I'm hoping the rest of my tank isn't in jeopardy. I read that a white ring means infection. I took this pic.

 

[Flippers4pups]

I've had a few problems lately after using more rox .08 than I should have. All acans have been dying like they got hit with a plague and this guy was awesome looking. I'm thinking it's some kind of infection that took over. I'm hoping the rest of my tank isn't in jeopardy. I read that a white ring means infection. I took this pic.

Try dipping in iodine.

 

[Docdiggy]

Is this what others use? I've never dipped anything in iodine.

 

[Flippers4pups]

Yes, lugol's solution.

 

[Docdiggy]

I just received the bottle pictured above. I've read many threads about 2% and 5%. I would like to use this as a dip to see if it will stop whatever is killing my brain coral and acans. Does anyone know of a recommended dosage for the above pic?