As stated in the title, where does the water go when using PBW? Whenever cleaning carboys with PBW I fill to the very top with warm water and set aside, then when I come back and hour later the water level has dropped a couple of inches! Is someone sneaking sips of PBW water when I am not looking? Is the PBW making some of the water disappear? Anyways I have been wondering this for several years now and am interested to know why this happens... Happy Monday!