Fortuitously, on my way to work on the last day of this project, I found another tank on the side of the road. I noticed it was a 30 gallon tank and was about to leave it (as amusing as this project was and the potential for more of the same, I really had no need to start another one at this point) until it occurred to me that if I were to strip off the outer casing and the insulation, I could fit it into the space with the first one. AND MORE IMPORTANTLY, I could connect the two by siphon hose which would more than double my storage capacity from the trash can!