In reply to Jones Beene's message of Fri, 11 Apr 2008 11:44:10 -0700 (PDT): Hi, [snip] >The very shallow open-pond is preferable in areas >where there is plenty of water, so that evaporation is >not a problem. If you have every seen a sliding-form >curbing machine in action, then you can realize how >simple and cheap a 3 inch deep pond can be... [snip] If you feed the pond with salt water and cover it with transparent plastic sheet, then inflate it with a slight overpressure, you have a simple but very cheap solar fresh water generator too. The water vapor condenses on the plastic sheet, and runs down the inside surface where it is collected in guttering. Two birds with one stone. Regards,
Robin van Spaandonk The shrub is a plant.
