+1 on the anemone being very unhealthy. What sort of lighting is it under? Fortunately, anemone's will do a bit better with some direct feeding until it can regain its color. Try giving it larger pieces of oyster, shrimp, etc since it has lost its symbiotic zooxanthallae algae. In a very new tank such as yours, it unfortunately will probably not recover. Anemone's are pretty sensitive to changing water parameters, need intense lighting, etc.