Moving tank

[Treebeard]

We have decided to do some reorganization which will include moving a 90 gallon tank about 6 feet across the room. Would it be safe to leave about 20 gallons in the tank and slide it across the floor, stand and all? I would have to remove a large portion of the live rock, but I figure if I get the weight down to 250 pounds it should be light enough to slide on the laminate without scratching it.