Tds Question

[sirhc13]

Just set up my RODI system, made some modifications/upgrades to a 5 stage BRS unit.
Installed the dual membrane to boost from 75gpd to 150gpd, and added another DI canister.

Anyways my question is.....should I be concerned that even though my in line tds meter reads 0ppm... when I test with a handheld tds meter it reads 5ppm?

 

[jeffopentax]

What is the water that you are testing with handheld in? Doesn 't take much "contamination" to get a reading above 0.

 

[averhoog]

sounds like there is something in the containers that the water is stored in

 

[Kyle1970]

Agree.
I ended up using a shot glass. Rinsed it several times with RODI, filled and tested it that way.
Mine came up 0ppm that way.

 

[Jewel]

What I do is run the water directly into a 30 gl tank, mix my salt for 24 hours with heat then pump it to the tank for water changes. So I'd say no if the inline reads 0 then 0 it is.

 

[sirhc13]

Thanks everyone, yes I assume the barrel used for storage is slightly contaminated (was used for mixing saltwater by previous owner).
Was more concerned if I should use the water if it is 5ppm......

 

[Jewel]

5 ppm isn't too high but 0 is optimum

 

[Jewel]

Some containers aren't Reef safe. that's why glass is prefered

 

[Kman]

The Black brute Rubbermaid are bad for contaminants. I had that problem and switched to the blue Rubbermaid for my RO water and it solved that problem.