thats a good theory,BUT i never know what is gonna come out of my well,my aquifer is nt reliable at all,deep in limestone country and every time weather changes so does it,right now im running 7.2 ph and 315 ppm ,that doesnt leave a lot of room for feed if you dig,then come summer that shit be along the line of 400 from the aquifer going down,ro is out of the question ,i need to be able to water a lot of shit outdoors and im sure enough not gonna waste all that water to make into ro water to add nutrient back in to satisfy what the plants need out there,ya a few plants indoors in control conditions ya ro is good ,but im talking about a 250 gal ibc container full of water every time i water my bottom garden,hahah them i have the container garden on top up here,so ya ro out of question