High RO/DI.

[ST3PH3N]

I just replaced all my containers, ro membrane and fresh Di. Getting 9-12 ppm at the faucet and 5-9 from the DI. I'm very confused on why these numbers aren't lower.

Tap water is 209 ppm using a digital tds meter.

Running a BRS drinking and reef system unit. 75gpd

Sediment filter new
5 micron CTO/2 carbon block new
0.6 micron +1 carbon block new
RO membrane New
Di new and packed tight.
Running 2 chlorine taste and odor reduction canisters, both not new.

Not sure my pressure coming in.

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[SABOB]

Maybe RO membrane not seated completely.....I'm sure others with more experience will chime in


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[SABOB]

Did you fully flush all new filters and membrane according to directions?


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[ST3PH3N]

I took it back out to reseat it but same numbers. The di numbers concern me more

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[ST3PH3N]

I'm hoping they'd be flushed by now. I've ran Atleast 15 gallons thought all them. Maybe I was supposed to do something different ? I drained the tank. Closed it up, ran the system through the new media for about 5 gallons and another 10-15 later these are my numbers. Ran about 5-10 through DI resin too. Nothing below 5.

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[350gt]

Is it tubed up correctly?

Sediment-carbon-membrane-di resin

[ST3PH3N]

Is it tubed up correctly?

Sediment-carbon-membrane-di resin

Yes it is.

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[SABOB]

Is your TDS meter calibrated?


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[BBQHILLBILLY]

my reading from my ro is 15 and di is 3. Although it would be nice to be 0.
I only got 0 right after a new di change. I seem to be going through di a little faster, it seems to settle at 3.

When I first run the water through it does have a higher reading and settles on 3.

How long do you run it before testing? Your reading before ro and di is in the teens, thats ok.
It would be nice to be lower. DI should handle the rest. How new is new on the DI?
If its not sealed correctly (when storing) the DI can go bad, i think. just an fyi

[ST3PH3N]

Is your TDS meter calibrated?


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Not sure, it says zero when I turn it on ? Lol

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