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In general, and in terms of say “typical” city water (realizing “typical” is a loose, indefinable term), will I gain much benefit from using an RO/DI unit vs. simply an RO unit?

April 26, 2017city Loose realizing term terms water

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In general, and in terms of say “typical” city water (realizing “typical” is a loose, indefinable term), will I gain much benefit from using an RO/DI unit vs. simply an RO unit?

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Maybe I’m wrong, but long term it seems as though an RO or RO/DI unit will be more economical than a DI unit alone (such as the Kati/Ani unit (unless you try to reconstitute the filter media, which sounds like a major pain in the rear), a Tap Water Purifier (I’ve used this on my 20 gallon since the tank requires modest water changes and top-off). I think I read in the FAQs by Steve Pro or someone that the small Kati/Ani unit that sells for about $139 can knock out about 200 gallons of purified water (high cost per gallon), and my little Tap Water Purifier can knock out about 30-35 gallons at somewhere around $13 to $15 dollars a filter. Under those scenarios, and absent trying to renew the media, the little old Tap Water Purifier is more economical than the Kati/Ani unit. Anyway, I digress. Do you feel an RO or RO/DI unit will long term be more economical, all things considered, t