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I got a vertex 100g/day ro/di about 2 weeks ago works great just I'm on well water with a post iron filter and softener tds over 1000 so the di cartridge didn't last long at all already need a new one. Just remember no brass or copper after the ro unit
I got mine from Filter Direct quite a few years ago. The 1 I have has a 4 gal tank that dispenses RO water at the sink and a seperate line that outputs RO/DI water to my tank top off storage container. Filter Direct Online Store (C)