Atmospheric Buoyancy (Floating on Tydos), Balloons?

Alright,
So for what you may not know when crafts in reality are floating on water they are floating because they are less dense than that water, meaning they can float on anything as dense as water is. Essentially, what I’m talking about is adding airships. Take a fuel tank, make it buoyant enough (higher than 100% certainly) and it should not hit crush depth on Tydos but slowly stop falling and float in the clouds. That means there doesn’t have to be any new parts to get this working! Plus it would make floating space stations on Droo and Urados plausible too.