Sometime this year I've got to move 4 tanks and I've lost count of how many fish, 4hrs away! I am not looking forward to it. But have already got my eye on a few large, sealable barrels with handles on them at work. Thought I'd clean/dissinfect them, transfer each of the tanks contents to each barrel, incl. filters and heaters which can then run off the car lighter. Easy peasy, as long as the barrels don't fall over!