In theory a 100% of the water is recoverable, but the law of diminishing
returns applies.

However, this definitely is not a botany question.
PvR

Where should I post the question?

I posted it here since from my reading I know there must be some sort
of air exchange for the plants to survive so I thought a botanist may
have done some expereiment as to what the air exchange might have on
recovery rates for the humidity.

Dan

Can't really help you there. This is a technical question far away from
botany. You might try rec.gardens.ecosystems but I can't tell you from
personal experience if that would work
PvR

Dan schreef
Where should I post the question?