I purchased a pink Seabae last night from my local store based on the advise they gave me. They told me that they were a very hardy species ( as far as anemone goes ).
OK, we have just determined that your LFS
doesn't know much or are a little liberal with the truth, Sebae anemones are not hardy at all, one of the common names for this anemone is the delicate anemone.
Please tell us more about your system, how long it's been set up, water parameters, lighting, filtration etc...
Also if possible provide a picture of the anemone, so we can verify the species.