I just purchased a green star polyp from my LFS yesterday and it has not opened yet and is starting to show white fuzz?
is it dyeing, should I take it out of my tank [/img]
I would check all water parameters first and make sure nothing is out of whack. If test results are good and everything else in the tank looks good I would wait it out for a while. It may just be having some trouble acclimating to your tank. GSPs are pretty hardy so they very well may come around...
How did you acclimate it? Is this a new tank, or an established tank? Do you have other corals in the tank that are OK? Have you checked basic water parameters?
I guess I'm a bit surprised because GSP are generally very hardy...