Im moving my 80l tank to the other side of the room. If I get it to a third full I reckon 2 people can lift it. I have timed the move so that I can do a 50% water change, but my question is whether it is acceptable to remove a bucket full of water and the put that water back in 10 mins later once the move is made. I cant think of any problems but please tell me if this wrong as Im doing the move in a couple of hours. I figure the fish wont be stressed too much being left in the tank as we are only moving it 20 feet.