help a 150g newb - let's do this reef together

[jon in alberta]

Hi All,

Long time away - I have been busy, and also busy with the tank. But I come back to you again with an issue:

I have purchased an Elegance Coral from the LFS and it was fine, then it started swelling up (see the pic; sorry about the blue, I did't want to colour correct in fear that I might mis-represent the problem).

I did some reading, and it seems there are many issues (from protazoa to too much flow to pestering hermits) but the one I thought it might be is the lighting. I won't go into detail on my tank conditions (unless someone thiks that it is that), but I ask this: is my vertex illummnia 260 lighting too bright? I had the led whites turned up the highest (actually higher than in the picture of the previous post) - and from what I have read it seems that I may have sunburned my Elegance Coral.

Does this sound (and look) like a potential?

any Elegance Coral keepers with Vertex Illumina 260 or just using LEDs out there?

Thanks.