Below what? i could believe it, and i could not believe it. Science fact is that using only water through metal, and using ambient air to cool it, its either you at ambient or above it. There are no other options.Not impossible believe it or not. See below.
Having this discussions feels like having a discussion about whether is helium really lighter than air or not. It's inarguable. Using Chemical reactions to actions (the bong) is not what we're talking about here.