TDS meter reading 26

[Kryptikhan]

Time to change meter or no. Got the unit in Nov of '07

Thx

 

[kar93]

Time to change the DI filters maybe.

 

[Toddrtrex]

Would suggest changing both the RO membrane and the DI resin.

What is your TDS from the tap?

 

[Kryptikhan]

<a href=showthread.php?s=&postid=12579018#post12579018 target=_blank>Originally posted</a> by Toddrtrex
Would suggest changing both the RO membrane and the DI resin.

What is your TDS from the tap?

55. I woulda tought that it woulda been much worse. Hmm....DI Resin? gah which is that. I know membrane.

 

[vanmo92]

since its only been like 7-8 months since you got the membrane (unit) I think that it is your DI beads that need changing. What is the TDS after the membrane, but before the DI? If it is still relatively low, then it is your DI.

 

[Toddrtrex]

Wow, so you are getting about 50% rejection rate, not good.

DI resin should be the last canister on your unit.

I have a feeling that both are bad, if your RO membrane was still good, it should be around 5 TDS after the RO -- that is with a bad 90% rejection rate.

EDIT --- are you 100% sure that your RO membrane is correctly installed?

 

[GSMguy]

<a href=showthread.php?s=&postid=12579074#post12579074 target=_blank>Originally posted</a> by Kryptikhan
55. I woulda tought that it woulda been much worse. Hmm....DI Resin? gah which is that. I know membrane.

do you have a RO/DI or just a RO?

 

[Kryptikhan]

<a href=showthread.php?s=&postid=12579103#post12579103 target=_blank>Originally posted</a> by GSMguy
do you have a RO/DI or just a RO?

it's in y sig I'll go check now. lol

 

[Kryptikhan]

i think I only have R/O darn....ima have to upgrade I think.

 

[GSMguy]

<a href=showthread.php?s=&postid=12579127#post12579127 target=_blank>Originally posted</a> by Kryptikhan
i think I only have R/O darn....ima have to upgrade I think.

you can add DI chambers on to your RO without buying a new unit.

just put them inline after the RO unit.

and like todd said change out the membrane while your at it.,

 

[Toddrtrex]

This is my 4 stage unit -- first two are prefilter and carbon, then to the RO membrane ( horizontal ) then lastly the DI part.

Even if you only have an RO unit, the membrane shouldn't have gone bad this fast. How much water do you make?

 

[Kryptikhan]

I dont make a lot of water to be honest. Corals are softy and water changes are actually small. My readings are all normal.

I have a kent marine RO 60 HiScl Unit which I am prettsy sure does not have a DI unit.That DI unit easy to install. Buy it, plug in the tubing walla?

Thanks. Maybe my TDS meter is wack?

 

[mm949]

i would double check ur TDS.....make sure u test right out of the machine in a clean new plastic baggie.....do not use a cup or plastic container....u will get a false read