Colt Coral Problem

[phill21]

colt coral seems to be shrinking and all my levels are great, coral looks wilted and cant get it to fully expand anymore

 

[lgtentacle]

Would it happen to be next to a large leather coral? Leathers and sinularia's have chemical warfare fights which will do this. Post a pic of the tank if you can. Your alkalinity levels being off is the next usual suspect beyond just a general water flow issue.