I am a retired organic farmer and interested in nutrient cycles. As an volunteer I now travel mainly to poor countries and together with locals I would like to find new ways of sustainable agriculture. This is beyond the regulations of IFOAM.
Likes received: 50
Re: Blue Diversion AUTARKY - A self-sustaining toilet off the grid (EAWAG, Switzerland)
without knowing more of your house and concept I would suggest a solar water pump (12 V) without any battery. If the tank on the second floor ist big enough the pump might work during the sunshine and remain lazy the other times... Watch out for the pressure needed.... Investment should be less than 50 Dollars.