in a couple of weeks i will be upgrading from my 55 to a 120. i am looking for opinions on how best transfer the life from the old tank to the new. it's a soft coral reef w/ hardy fishes. i also have a 20g fuge, both have tons of life in the substrate. so, do i need to treat this as a new tank, or can i just dump the old tank in the new and get on with it? or somewhere in between? i could set up the new tank for awhile and just heavily seed it off the old tank before adding the fish and corals, or add them slowly, but i would really like to get the old tank broke down as quickly as poss. at that point i will be listing some equipment.