To run the inverter I use a portable battery jumpstart setup that has a 12v plug when collecting and the truck's cig lighter when driving. Before the portable setup I used a spare boat battery that I charged ahead of time. A deep cycle battery would work best. Either way there's a lot of juice in a car battery and a single quality air pump won't use very much. Easy enough to calculate how many amp hours your pump will use. Way cheaper than buying tons of d cells and using loud crappy 12v bait pumps that die when you really need them. Styrofoam coolers that stack when not in use are good for temporary holding tanks. A short piece of heavy pvc pipe for each holding tank will keep the air tubing from floating. I don't use airstones, less backpressure on the pump.