colt coral not looking good

[jimm699]

hi fellow reef keepers. colt question. have had a 3in colt coral for a few months. last couple weeks has not been looking so good. probably about half the size now. only thing i can fiqure is after moving some filters around it wasnt getting as much flow. looking white around the bottom. I did increase the flow around it last night. Any thoughts please!!? all parameters look good. alk 9 calcium 440 did a water change this morning. t5 lighting
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[Lebowski_]

Try using a turkey baster to blow on the surface. Maybe it's just shedding it's top layer to remove detritus? Any pics?

 

[Thisseemsfishy]

Keep a close eye on it. You may need to cut the white portion away if its starting to melt. Colt are notorious for getting infections and dying off. I would also run fresh/extra carbon until it looks better