Hi there! We left SC yesterday. Both tanks are small (2 gallons). To prep, I transferred Otto to the frog tank that is kept at 7" deep anyway. For heat, is pretty easy. Plug it into the truck's 110.Welcome to Fishlore. I bet keeping aquariums with a nomadic life style presents unique challenges.
I'm reminded of this traveling aquarium I saw in Florida. It was a large marine aquarium in a truck that traveled around the state for education purposes. I spoke to one of the folks that ran the operation, and I learned they lowered the water level by about 50% (split into 2 tanks) to balance the weight and keep things from splashing out when moving.
Do you have to do anything special with your tanks when underway?