Thats what I keep hearing, but I don't know. Maybe they have a special "Dave pile", just for me. They say "Dave called again...grab another junk pump to send him".
In the first pic, you can see the 90* elbow off the inlet of the pump. Basically, the heaters would pop before the pump sucked air. In the second two pics, the frontmost pipe(the one with the T) is the return from the pump. The other two pipes are the outlets from the tank.