Colt Coral Help.

I Picked up a Colt Coral Last week and It was about 6" tall with a trunk about 2" wide and when I put it my Tank it shrunk to about 3" and has not come back to it normal self. What could be the problem?
Water perameter.
pH = 82
ammonia = 0
nitrite = 0
nitrate = 0
Magnesium = 1200
Temp = 76.8
Thanks
Kendall
 
Ca is a little high @475 and I will pick up a test kit today for Alk & iodine ans test that when I get home. I did have it tested this past weekend and all was good just high Ca.
 
Moved this topic to current forum since it had a couple of replies. Deleted duplicate topic from forum.
 
Sorry it took so long to get back to this post as I was one of the members that was cought up in the database issue they had.
Here is the test results from today.
Calcium = 450
Alk = 4.5
PH 8.1
Phos = 0
Nitrite = 0
Amonia = 0
Nitrate = 0
 
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