You have described so many different behaviors that your anemone had. H is not happy. Please have someone baby sit it for you until your tank is more stable. I agree, that your tank needs to mature or your water is not perfect. If your anemone dies it's a tragedy, because in the wild, anemones can live for hundreds of years. They also reproduce very slowly. When an anemone with a 60 or 70 years ahead of it is taken from the ocean and left to die in an aquarium in just several months, it is a tragedy. Please don't buy anything that is not easy to keep until you have some more experience, and do some more reading. Don't trust everything thats told to you at your local fish store. Remember, if they know that your new at this, they will tell you anything just to make a quick buck. Good luck.