Which RO/DI System?

[Chipper1978]

Hello, all. Looking to buy a RO/DI system and would like some recommendations, especially regarding how many stages. I have city water and tested it at 44 TDS. Below are numbers from the water authority’s most recent water quality report. Thanks in advance!

 

[Flippers4pups]

Depends on how much you want to spend. A unit that has a TDS meter and pressure gauge is highly advisable.

Stages, I would go with at least a 5 stage.

Prefilter, two carbon blocks, membrane and DI chamber.

 

[Chipper1978]

Depends on how much you want to spend. A unit that has a TDS meter and pressure gauge is highly advisable.

Stages, I would go with at least a 5 stage.

Prefilter, two carbon blocks, membrane and DI chamber.

Obviously don’t want to spend any money unnecessarily. Any advantage to moving to a 6 or 7-stage (BRS sells them)? I’m thinking that with my water’s already low TDS, it may not be necessary to go above 5-stage get to 0 TDS. Thanks for the feedback!

 

[Flippers4pups]

The extra stages may or may not be needed. These are mostly extra DI chambers. Separate DI resins, Antion and cation arent needed, but a extra mixed bed chamber may help reduce DI usage.

Most likely a five stage is a good place to start.

 

[Blue Ring Octopus]

How many gallons do you need to make in a week? I would go with any of the sponsor's here, I would call them and see who answers the phone, who answers your questions and have an easy solution to your needs. I would not have the system or the knowledge without the ability to call them, send photos of my setup and get a correct answer.

 

[Chipper1978]

How many gallons do you need to make in a week? I would go with any of the sponsor's here, I would call them and see who answers the phone, who answers your questions and have an easy solution to your needs. I would not have the system or the knowledge without the ability to call them, send photos of my setup and get a correct answer.

Total system volume is 127 gallons, so thinking around 30 gallons per week to cover a water change and top off. My water appears to have nitrate and BRS website says this could be tough to remove without 6-stage.

Calling around is sound advice. Thanks!