RO/DI unit recommendations?

[dkuster]

Hi all,

I currently have an old, RO unit that I'm looking to replace/upgrade.

I'd like to get something with a DI stage.

We have well water (so the water is not chlorinated), and a bit "hard" (we get "white scale" buildup around the through-the-door water dispenser on the 'frige).

Also, my current unit is permanently plumbed to a utility sink which is used for nothing else. As a result, on th rare occasion that I disconnect the RO unit and run the water, the water comes out brownish for several minutes. I think it is rust build up in the line.

So, given the above, how many stages would you recommend and what should those stages be?

Thanks for the input! ;-)

[HDAlien]

It's spendy but I love my Spectrapure Maxcap RO/DI system.

[BeanAnimal]

Also check out:

melevsreef.com
purelyh20.com
thefilterguys.biz
buckeyefieldsupply.com

ALL sell quality units with customer service to match.

[an411]

I went with the reef +1 from the filter guys and its a great unit and works good for me

[dkuster]

Thanks guys, I'll check these out.

[NYCrab]

I'd recommend buying from melevsreef.com -- Marc is good to deal with and probably has one of the cheapest 100 g/day 5-stage ro/di units around. I bought my unit from him - it has one mechanical pre-filter, two carbon filters (which also serve as pre-filters as they trap sediment as well), an ro chamber and a di chamber. I have NY City tap water where there is also a lot of rust in the pipes (my appt is a WWII building) -- does a great job at trapping all of the sediment before hitting the ro canister. Hope that helps.

[dkuster]

I spent some time doing some research over on
thefilterguys.biz. Great site. What really helped me was they
had filtration recommendations based on your water supply.

I have well water, so no chlorine or chloramine, but there is
some sediment and/or rust in the pipes. For my situation they
recommend a 5 micron prefilter followed by 2 chambers of
carbon, then the RO, then the DI.

What was really nice (and saved me money) was you can buy
parts. I currently own a SpectraPure CSP-DI. Instead of
replacing, I just ordered parts to beef it up! I bought a new
RO membrane + flow restrictor, a clear filter housing to replace
the opaque blue housing on the prefilter (so I can see how
dirty it's getting), and an add-on DI housing with refillable
cartridge. (I also bought a bunch of filter media/resin).

Once I'm done with the conversion I'll have a custom
5-stage unit! :)