I have a little problem that I am trying to fix. I have my ten gallon tank on a walmart special bookshelf. I noticed about a week ago the shelf looked like it was bending. I ordered a metal aquarium stand and assembled it. My question is, is it all right to move the tank with about 25% of the water in it? Or do I need to drain the whole thing? If I drain the whole thing what do I do with my fish? Thanks.