Moving tank stress...

[krissyfish20]

Hi!
My boyfriend and I are moving our 75 gallon marine tank from downstairs to upstairs this week. We've never done this before, and I know it's stressful on the whole reef system but it has to be done. The question is...does anyone on here have any tips for the least stressful move possible for our tank inhabitants, or any tips for moving a large marine tank easily?? There isn't a whole lot of rock or corals just yet, appx. 50 lbs of rock, and appx 8 corals plus 6 fish and a whole ton of urchins, crabs, snails, shrimp etc etc. Any advice would be fully appreciated.
Thanks a million
Krissy