Ro system problem ,help would be appreciated

[Dburr1014]

DI is always last. Think of it as a polisher.

Membrane takes out about 95% of TDS, the DI will finish it off.

 

[workhz]

I have the DI connected before the membrane

DI should be last. Perhaps that'll solve your pressure issue also.

 

[BlueWavesReef]

I will change it as last stage and run the system should I move tds probe after the DI?

 

[Dburr1014]

I will change it as last stage and run the system should I move tds probe after the DI?

Yes

 

[JoshH]

I will change it as last stage and run the system should I move tds probe after the DI?

First TDS should be after the Membrane and Second after the DI stage. Warning, depending on how long you ran your system setup like this, the DI Resin may already be exhausted. In the future if you can spare the money for a third TDS meter you can install it before the Membrane. This will give you the total picture of what's going on with your system performance wise

 

[Woodyman]

Just seeing this thread today. Happy to chime in and help if you still need any. I'll drop a helpful read below as well that may assist.

RO/DI Basic Guide

There are always a lot of questions regarding which RO/DI setup do I need, how many stages, how do I know when to change filters/membranes, I’m getting a weird TDS value, etc. Hopefully this clarifies a few things and helps some of you out one day. My first recommendation would be to find the...

www.reef2reef.com

 

[BlueWavesReef]

Yes will do , gonna order booster pump as my psi still around 25 ,and gonna change the DI resin , my tds went from 4 to 2 yesterday, after connecting it currently now my DI resin last stage , thank you everyone

 

[BlueWavesReef]

Finally thank you everyone for all the help

 

[theMeat]

Nice.
With psi lower than about 45 you will have to replace cartridges , membrane, resin often.
How/where is your unit attached to for water supply?

 

[BlueWavesReef]

From the main tap , I will add booster pump

 

[Dburr1014]

Nice.
With psi lower than about 45 you will have to replace cartridges , membrane, resin often.
How/where is your unit attached to for water supply?

I asked this earlier in the thread. It sounds to me it may be a well system. You could bump up the pressure assuming your well tank is rated for it. Most run around 40-50.
I have seen some lower. I bumped mine up to 50-60 and made sure the tank bladder didn't leak.

 

[Dburr1014]

I

From the main tap , I will add booster pump

Um, city water?

 

[BlueWavesReef]

yes city water

 

[Dburr1014]

yes city water

Booster pump it is.
Happy reefing

 

[BlueWavesReef]

Thank you

 

[theMeat]

From the main tap , I will add booster pump

Wow. Was expecting to hear it was attached to a faucet with a water saver/restrictor. Twenty-25 psi in basement is way low. If your house is two story would imagine you can’t take a shower on second floor. How’s the pressure in the house overall?

 

[BlueWavesReef]

well its good pressure on second floor , its just the only tap i can connect the ro system to , we mostly use electric showers in northern Ireland so its good pressure lol