Originally Posted by TheUO
I would have to really get down there and look, but from the peeks I've had under the 2715 it looks like the supplemental 60 gallon tank is higher than the 100 and feeds via a gravity tube. I would imagine you're filling first through the 60 and the sensors are only in the 100 which fills first.
If I'm wrong, I'm likely incorrect on which tank is first in the line.
I'll get under there sometime soon and verify which tank is which.
I believe this is the case. We just returned from six nights of boondocking in Colorado. We made sure the tanks were completely filled and it took a long time to finish filling after the meter showed full which convinces me the extra 60 gallon tank is first in line and does not have a sensor.
We showed once a day (sometimes twice) and used the toilet and sinks. We were conserving water but not extreme conservation. After six days of camping we still had 1/3 water showing on the meter. Very happy with this especially compared to our previous trailer that only had a 60 gallon tank.