Blue Linckia questions UPDATE.

[howdy20012002]

linkias in particular are extremely picky to any change in salinity.
you definitely need to drip them for several hours for acclimitization.
I have actually seen them react to being hit with water from the sump when toping up with fresh water and then a day or two later - same thing - slowly start to detoriate.
IMO, it is done, pull it out before it makes a mess of your QT.
most types of starfish are particularly prone to death by too rapid of acclimitizatoin, but in my experience Linkias are by far the worst.