DIY passive RO generator

just to throw another spanner in the works......evap water isnt "pure" depending on what is in the water it also evaporates with the water to collect on the plastic. prime example urine, evap it with plastic or a heat sorce its still going to carry certain elements of urine accross with it. things in the water with a hevier atomic mass than water will stay but anything equal or lighter will evap with it. you should listen in science kiddies!
 
for me the look of that plastic wrapped tank is dreadful and no way i could tolerate it. just call me silly but i prefer adding some water to the sump and doing my weekly water changes i guess im just old fashion that way :)
 
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