When to change DI resin

[reefer2005]

At what TDS reading do you guys generally change your DI resin?

[jt_redmist]

IMO I feel if my reading goes above 5 tds, I notice a faster diatom build up on the glass. Due to this I like to keep no higher than 5 tds. I have the color changing DI, so usually if that's the case the DI needs replacement.

JT

[Randy Holmes-Farley]

As soon as it rises above 1 ppm, it should be changed, IMO. I detail that in this article:


Reverse Osmosis/Deionization Systems to Purify Tap Water for Reef Aquaria
http://reefkeeping.com/issues/2005-05/rhf/index.htm

[reefer2005]

Thanks guys.

[Randy Holmes-Farley]

:thumbsup:

Happy reefing. :)