my 2 yr old ribbon eel died!

[gixxer604]

i had my ribbon eel for the last 2 yr in a 70 gal tank. n recently i upgraded to a 220 gal. my new tank is now 2 months old, n i just added the eel in yesterday. This morning i've found him wraped up with my carpet anenome, i pulled him out, n notice his slim was falling off. The only new life i added to my aquarium is the carpet, can any one tell me what happend? all my other fishes n corals r doing great. is it that my tank isnt fully established or can it be the carpet?