This may sound a bit off, but I've moved my 15 and my 20 several times. All I've done is take out as much water as I can, leaving about 2" above the gravel. Then I take out filters, heaters etc, and have a friend help me lift it into the car. I usually put it in the front seat so I can keep an eye on it. And off I go, the farthest I've taken it is about 1 hour. I've never lost any livestock this way, the tank gets real messy but once you get it set back up it clears in a few hours. This way also gives your gravel a good stirring and cleaning. Keep in mind though that these are smaller tanks and I keep pretty hearty species.