i moved my reef setup (plus several freshwater tanks) across town last winter and probably spent more time planning the move than actually moving
it was pretty successful losing only a coral banded shrimp (coincidently when i moved the reef within the same building, the only loss i suffered was my first cbs
i had lots of fresh saltwater on hand and bought a 50 gallon rubbermaid tub as a temporary tank (heater, skimmer etc - 2 days with only NO lights but i figured it was a necessary stress
if i had to do it again i would but not in winter if i had a choice
there was a lot of stress since it took the reef a good month to settle and return to its former glory