Actually, I get RO water weekly at Wal Mart from the machine they sell as drinking water. I don't know what I would do without it at this point. I get 6gals/week for less than $2.00 total (it's .33 a gal!!). Very doable for me, though my tank is only 37 gals, so the 6 gals is usually enough for top offs during the week and a change on the weekend. When I add livestock, I know that I need to go and get more, easy peasy. I can do that!! :yes: Definitely a must-have...
Lisa :happyfish