For the mom who is using a Nurture III and supply has dwindled from 12 oz to 9 oz, has she by any chance tryed changing the filter? They do got old and I advise my moms to change then about every 3 months or before if the filter gets condensation inside. The filters are cheap and can be obtained from Bailey Medical, if you need the address please E-mail me privately. Callie Huza, Private practice in Santee, CA (where we are having the Hottest Winter ever!! It is awful!