WTB: Carpet & Anemone
Is this going in your bio cube? If so I would not recommend a carpet anemone for a tank of that size. It is also wise to wait until your tank is about 6 months old before you get an anemone. For something smaller I would recommend a bubble tip. You can also look at Rock flower anemones and mini maxis, but those don't host fish. If you're going to be putting this in a bigger tank, I was at hydra and reef life this past weekend and they both had green haddoni's.
Edit: If you end up buying a carpet make sure you have some medicine like cipro on hand in case they come with an infection. There's great information on the Anemone thread sticky about treatment.
Best of luck.