black/grey ratio to freshwater

[Busman]

Have already reduced the flush amount Jon, several years ago, without any problems. We also use decent loo paper without any problems, our pump out is via a macerator and it is always only liquid unless we have not moved since recent deposits, if not the macerator takes care of anything more solid.
500 fresh, 250 filtered drinking which can top up fresh (it is more than we need)

Our approach is not to be scrimping and saving every drop of power and water but to be as comfortable in our mobile home as our fixed house, which we are.

[native pepper]

Bagmaker, it depends, sometimes it's black sometimes it's grey. When the grey fills first, we usually dump it where ever we are if safe and as don't use any chemicals, eat red meats, processed foods or dairies and only natural soaps, our grey water is very clean and has a solids trap before the tank. So our grey water is easily used in the toilet and macerated before disposal,

[bagmaker]

Excellent, thanks for the feedback

[Busman]

Wayne the important change I will make on return is to be able to drop grey straight out, without it going through the tank then on the ground. This would then allow us to use the grey for black if the occasion demanded. Small change but big difference if in one place for some time.

[Busman]

One last comment, a domestic toilet in a domestic situation needs a lot of water to flush it to the sewer, in our situation it just goes over a bend and straight into the tank, hence very little needed.
We get asked by people if they can have a look and an almost 100% comment from the females is "oh, you have a proper toilet", that should tell you something

[bagmaker]

Thanks William,
My layout is a bit different as the tanks are up higher above the engine compartment and some of the plumbing below that level. I have piped everything to a discharge point with shut-off valve for onsite sullage/drainage but if closed this all defaults into one of these-

http://www.ebay.com.au/itm/Good-Boat-Ma ... SwzOxUWdxT

which pumps it up to the grey tank.

i did like your choice of dunnies, cheaper too, did you put an isolation valve under it for travel?

[Busman]

Yep 90mm knife valve and we made it air operated closed all the time except when you press button to open, have a small compressor that does the steps and knife valve, only needs to run a coupla mins every coupla days