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Graham_f
05-08-2014, 12:05 AM
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
05-08-2014, 12:17 AM
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
05-08-2014, 01:37 AM
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
05-08-2014, 03:57 AM
ok, thanks for your experience.
i ordered new di resin and filters tonight so things should be back on track soon

gregzz4
05-08-2014, 04:02 AM
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
05-08-2014, 04:20 AM
Myka also has recently done a write up (http://www.canreef.com/vbulletin/showthread.php?t=106542)on rodi and put up some links