too much TDS?

[Graham_f]

I know its time to replace the filters in my RODI filter... but how much is too much for TDS?

When my filter system was new i had a 0ppm reading for a few weeks, then it just kinda sat at 2ish ppm for the next 8 months.
Now suddenly im up to 26! Time to get new ones

How often do you change yours? Is 0ppm for the life of the filters realistic?

[Slyguy00]

As you stated you obviously want to be at 0ppm. But iv heard of people using water with up to 12 ppm with no noticable effects. I wouldnt reccomend that though. Over 20 and id be a little bit worried about adding that to my tank. Iv had my filters for almost a year and still reading 0ppm

[mark]

Depends how much water you go through and TDS of source but I change pre-filters every 6 months and di once it starts creeping up. Got around 5 years from my last membrane before my rejection rolled off and starting to eat up resin.

[Graham_f]

ok, thanks for your experience.
i ordered new di resin and filters tonight so things should be back on track soon

[gregzz4]

kien just talked about this recently and I'd be inclined to speak with him as you are both in Calgary

He, if I recall, had an issue with his DI

If he doesn't chime in, shoot him a PM

[mark]

Myka also has recently done a write up on rodi and put up some links