Yes, for the 5ers they are 80 gallon, but not for the TTs. I've been RVing for only about 4 years, and this tank-size issue is my only pet peeve...
... I'm sure I'll get over it. I have a 38-gallon tote tank for emptying, but it's a hassle and takes up valuable space where model sailplanes or fishing gear are supposed to reside... not to mention still another chore when I'm supposed to be relaxing. Thanks for looking...
Jack