i would like to get a carpet anemone but i am afraid that my mandarins will be doomed. if i keep it well fed and on the substrate will it be fine? how large do they get full grown?

very large in the wild. i never heard of carpet eating mandarin.. but they might. someone wanna clarify that for us?

Yes, a carpet can indeed eat a mandarin.

I don't know if a carpet is the best idea with any creatures. My best friend had a carpet and it measured 21 inches fully extended. It was about 3 years old and we use to see stuff come up missing all the time. The only thing that we didn't fear of loosing was the clown that was hosting with it. lol

My thought with carpets is that no matter how good you keep them fed they are still carpets and carpets are very aggressive for anemones in my opinion.

carpets are some amazing anemones, but they are not always a great idea..
will it eat the mandarin.. well i could.. mandarins are capable of moving quite fast, but like gobies, they like to move along the substrate and perch on everything.. one mistake could cost it its life with a carpet..