hey chris, my friend recentky moved his 300 G- he works at a moviig company and they used those pads that you put under furniture to shift the tank to a new room- the only thing is that he netted the fish out and drained most of the water to only cover the sand bed ( his tank was full of sps, softies and zoas) everything was fine just a bit slimy. just letting you know
-Cindy