Quote Originally Posted by monk90222 View Post
14 gallon or 12 gallon?...also how often do you have to refill the tanks??....thanks in advance!
I have both ... they didn't make the 14 gallon units when I started out ... We fill them every day (m-f) before we leave for the day ... they're not ever empty, but it's just one of those daily chores so we don't ever forget ... like filling rat water buckets.

-adam