specs say:
Fresh Water Capacity (gals.) 96
Black Water Capacity (gals.) 86
Grey Water Capacity (gals.) 76
can someone confirm if all grey water from 2nd bathroom, kitchen and shower all go to one 76 gallon tank?
If you look at your control panel and you only have one gray water tank button then I would say you only have one. On my 3905 I have two gray water tanks .