I'm just getting back into marine tanks after a 10 years absence, but I've moved my share of FO
marine tanks back in the day.
Here's how I'd do it:
1. Get three of your friends and a full sized pickup truck. That tank is at least a four man job.
2. Get 200 gallons of big strong plastic trash cans, with lids. You'll want to take as much water as possible, and all of the substrate, rock, etc.
3. Leave the trash cans in the back of the truck, out of the sun, and fill a couple of them halfway with water. Start putting the live rock in until there's no more rock in the tank. Top off the cans with water and put a powerhead close to the top in each one until you're ready to leave.
4. Fill another can full up with water and put the fish in it. Run a powerhead in it.
5. Fill another two cans halfway and put the substrate in. Top it off with water and pop another powerhead in.
6. Pump the rest of the water from the tank into the remaining garbage cans.
7. If the sump has bioballs, keep pouring a little water over them during the whole moving process. When they're ready to go into the truck, I'd cover the entire sump with a white garbage bag. Leave the water in the bottom and leave the end of the trash bag a little open so it can breath.
8. The garbage cans will then need bunched together in the truck and tide off tightly with rope. Don't ask me how I know this
Put the tank and stand in. Then punch several holes in the garbage can lids and put them on. The several holes in top and the sloshing around of the water on the highway should keep enough oxygen in the water. You're now ready to roll.
9. Once you get home, you'll need a bunch a buckets or better yet another empty garbage can to get everything inside.
10. Once everything is back in the tank, feed very lightly maybe every other day and run your ammo/trite/trate/etc tests. You will have probably killed off a portion of the bacteria filtration and fish/inverts/corals are VERY sensitive to even a slight jump in biological toxins, and slight changes in all other water parameters. This is why you want to take all of the water. Unlike freshwater, the ocean stays constant in any given area for millions of years, and the critters in that area won't tolerate even slight changes.
Everyone else in the know please chime in. This is how we moved our FO
tanks way back in the day of CC
and wet/drys. 8) I don't ever recall any casualties.