How much DI Resin do you go through?

[AJsTank]

I have a BRS 6 stage.

TDS is about 190 before it hits the system and it's 22 before it hits the DI Resin cartridges. I'm burning 2 cartridges every 4-5 weeks at 3 gallons a day and I'm not even using this system for water changes... How much are you guys going through? It seems like mine is a little much.

 

[SchnitzelReef]

I have a BRS 6 stage.

TDS is about 190 before it hits the system and it's 22 before it hits the DI Resin cartridges. I'm burning 2 cartridges every 4-5 weeks at 3 gallons a day and I'm not even using this system for water changes... How much are you guys going through? It seems like mine is a little much.

Sounds like ur RO membrane might be no good. I get 4-7 tds after my membrane. My DI usually lasts about 4-6 months.

 

[AJsTank]

Sounds like ur RO membrane might be no good. I get 4-7 tds after my membrane. My DI usually lasts about 4-6 months.

It's pretty much brand new. I guess I'll change the membrane and see...

 

[cdness]

yeah it looks like you are getting an 88% rejection ratio from the membrane which seems low. The majority of them are at minimum 95% and the better ones are verified at 98% or higher...