I'm switching from a 55 gallon to a 90, and had a few questions. Of course, I want the new tank right were the old one is and plan to swamp equipment over to this one. My concern is not causing another cycle and the least stress to critters. I had thought I'd drain the tank in a large tub, move it and place new one. I figured I'd put new sand in the new one and seed it with a couple cups from the old tank. I thought I read that you don't want to stir up the sand bed and everything trapped in it. I have a 30 gallon, I can temporarily hold some corals in, that's up and running. How have others moved their tanks? Curious what's the best way to do this.