Foam under a SeaStar tank?

[imisky]

haha ok, so tanks that have trims are all considered floating bottom.

out of all the tanks ive taken apart (AGA/Oceanic) majority of them were built with the side panels sitting on top of the bottom. That would explain why they needed the trim on the bottom.

In other words, most of the tanks built with 4 panels on top of the bottom are usually built with trims thus making them floating. The reason is because you are not supposed to support the whole bottom of tanks built this way only the perimeters of the base