[crash519 is correct on how you move tanks. There are a few more tricks you need to know...
1. If your rock has sponge growth, make sure you put in your bucket with the sponge growth down. And when you put it back in your tank you put the sponge growth down. Otherwise you will create a HUGE ammonia/nitrate spike in your tank and it will take you many water changes to fix it.
2. When you set your tank back up, check for any leaks...especially around the overflow area.
3. If you have a fuge, make sure your caulerpa is in water all the time and move it as fast as you can and put a light back on it. even if you have to make two trips. It will keep you from having it go a-sexual.
4. If you have bio media, well....that stuff just stinks. and you will have to clean it up and way through the spike it's going to cause.
5. Move all your corals in full water and please understand your corals. By that I mean make sure you know what corals CAN'T touch other corals. Make sure you don't put them together. Also, I know this will probably take a day, so put a small powerhead and heater in with your corals so they stay the same temp. Make sure the powerhead is going over the heater or the heater will either not work or pop.
6. When moving your fish also put a powerhead, heater and airstone to keep the O2 in the water...they will use it up quick and then you will have to slowly acclimate them back over hours....trust me I know this one. Make sure the powerhead is going over the heater or the heater will either not work or pop.
7. If your sand has been there a long time, you might want to run it through some RO water to clean it out before putting it back in the tank. Or you can take crash519 idea and purchase new sand and seed it with a little of your sand.
8. Bucket up as much water from your tank as you can. But as always, you will have to purchase or have fresh saltwater on hand to finish filling up the tank. That's the way it is...not all water will get moved over. So, make sure you are prepared to either purchase or have fresh saltwater made up.
9. Once you get your tanks set back up...test! test! test! your nitrates, nitrites and ammonia..(I did that backwards...lol) before putting any fish or corals back into your tank. It might take a day or two before you can do this. While you have your fish in the bucket, make sure your doing daily water changes on them. They have nothing that will remove nitrates.
If you have more questions, please feel free to ask.
James]