TDS Meter Reading - Switch Filters?

[moonlightdriver]

At what TDS reading do you switch out your RODI filters?

 

[moonlightdriver]

Do you switch out all the filters ?

 

[Capt_Cully]

I would change out the DI resin first and recheck it. You wanna be at zero. Mines usually around 1 or 2. Any higher, change resin. I also keep track of age of filters. If changing resin doesn't work, gotta start thinking about filters. A flush kit might also help.

 

[pascal32]

Pre DI I like to stay below 3 after it's been running for a bit. After DI I chane at 1.

 

[pascal32]

Main canisters change at 6 months. Flush RO membrane every week for a couple minutes