If youre moving a short or even medium distance its most likely not worth it to restart unless you have some serious issues with you LR or want to go back to the drawing board on your whole approach to reefing. Its always best imo these scenarios to do a reset like others have suggested. If you were running a sandbed it would be a good time to toss the old and get new sand or try a shallower/low maintenance sandbed or maybe a barebottom if you like the look etc. It gives you an opportunity to fix or optimize any plumbing during the reset if you wanted to plumb in a manifold or change layout or add a water change valve,etc. The corals will be fine both sps and lps and the fish. I spent a few years importing corals and fish, sometimes I have had high end sps spend more than 24hrs in transit and still be fine; corals are pretty tough, they may brown or even look dead in some cases but given time and proper params they will usually come back even from the brink of death. I also have moved several tanks both my own, friends and other reefers both short and long distances (out of state).
The aspect that is often the most overlooked is the most important which is to actually plan out and think ahead what exactly you want to do and be about 95% sure exactly how you are going to do it. Its easy to assume that its just draining water, removing livestock and moving the tank but the time component and details end up taking longer than we think and then it becomes a bit more complex than that especially if you are doing this alone or with just a friend/spouse/etc. This includes new aquascape, how you will temporarily store fish and corals (bags? buckets? home depot black boxes? etc) as well as transport them, how long you estimate they will be homeless while you reset your other things like plumbing, adding the sand and setting up the rocks, is there a way to orchestrate so they will only be homeless for an hour or 2 instead of 8hrs? Will you keep the existing water and transfer it, or will you keep half or all new water, if so how will you transport or have ready at the new place. I personally have had the best luck with keeping about half the water and tossing half along with the old sand bed. I take half off the top and store it in container of choice, this is quality water and has the params as well as bacteria your livestock is used to and isnt full of detritus/junk/toxins. Once you have the good water set aside I would pull all the live rock except a few pieces so your fish can still have place to hide for that time. Then get a larger hose 3/4-1" and suck the sandbed along with about another 30% or so of the volume out, the larger hose will help suck all the sand and garbage at the same time instead of just stirring up and making the water terrible/less stress on your fish. At this point 20% or so of the water left, I will pull that last rock or two and catch all the livestock, they are easier to catch with a few inches of water and no LR compared to starting with trying to catch/fight them, stress them out and sit them in a bucket. The way I outlined usually ensures you can catch all the fish and critters in a few minutes or less which lowers the stress overall and shortens the time they are homeless. At this point suck the rest of the sand and water for disposal then move the tank. The setup I like for this process is siphoning using the 3/4-1" into a 55g brute and having a sump/transfer pump (harbor freight) connected to a garden hose and pump to a shower drain/outside/wherever you see fit that can handle the volume. If you keep the pump off the bottom using a piece of wood and a clamp or other way, it will pump only the waste water and you will be left with the sand only in the brute for easy disposal. This will also allow you to do it continuously since you have a 200g and you wont need to be dumping constantly like you would if you were using 5g buckets etc.
If you can stage up your materials and supplies it helps too, buy all your check valves or specialty fittings in advance and plenty of pipe/hose/etc, a missing pipe fitting or running out of glue can add 45+mins to your process depending on the distance to a hardware store or LFS. It will always take longer than you think but if you take some time to plan it will be worth it in the long run and you will have a large head start over deciding to restart. Also in my experience if you shutdown/restart that will probably get put on the back burner and it may not get restarted for months depending on your life outside of reefing as its easy to get busy with other things. All my tank resets/moves have given me good momentum/excitement to make my tanks better over the years. Its like starting over but without the pain and wait of starting over. Hope some of that you find helpful and good luck with the move.
