We limit the number of flushes, and when we do flush, we use the lav sink to feed water to the toilet intake vice seawater.

I had not thought about dry flushing... that would at least take the sight of the liquids out of the way.

The 2 day capacity is however about what Peggie reported... so it sounds as if you didn't really save any space.

If I am gunkholing though, I don't have a way to pump out right now... So I need to work out that aspect, as well as get a bigger tank.