Colt coral disease/dying?

[dattack]

Hello I have a Colt coral that is approximately 5-6" diameter but there is one point at a small stalk that the colt branches that appears to be white. The polyps are still extended at past the part where it appears white.
Is this some kind of bacterial/viral disease? Is it bleaching where I need to cut of anything beyond this stalk? Or should I do an iodine dip or something?

Thanks

 

[XXX]

I am not familier with that problem, but if it spreads or if the affected area begins to fall apart the I would cut the branch off an inch or so below the the white area.

 

[christian]

what is the temp in your tank, if it has gotten to hot it can cause it to bleach. i had a colt bleach in the summer durring a high temp swing.

 

[dattack]

I might just do that but I turn the powerhead away from it now. I am not sure if the extra water flow to it is causing any harms although I believe that colt corals do not necessarily like strong currents.

 

[dattack]

Temperature is 80C right now but you could be right about the temperature swing. Cause I recently install a new hood on my Metal Halide and haven't put in the fans (until today). The odd part is that the area affected is directly in the line of a powerhead ( 1 ft away).
Today the tip of that area appears like it's mushing away. So do I just cut it and place it back into the tank?