mojo;402390 wrote: I moved a 75g tank from one side of the room to another (about 10') without ever turning anything off. It was over a wood floor, and I used furniture sliders, so it *can* be done.
If you're on carpet, wood floor, or something else that'll slide easily, then you may be able to use the floor sliders. I was able to get underneath the tank by using a flat crowbar and very carefully lifting up one side at a time.
With a 200g tank, I'd be a little more cautious- take out as much as you can from underneath the stand, the canopy and lighting, and drain as much water as you can and keep the corals happy. I'd have an extra container with saltwater, just in case something happens....