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RO/DI Resin
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spitdrumr View Drop Down
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Joined: May 11 2009
Location: West Jordan
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Points: 97 		Post Options Post Options   Thanks (0) Thanks(0)   Quote spitdrumr Quote  Post ReplyReply Direct Link To This Post Topic: RO/DI Resin
    Posted: November 09 2009 at 9:34pm
I just purchased a used RO/DI unit from someone and was wondering how to tell if the DI resin is needing changed? Its a Kent Marine Maxxima unit. I have new membranes for the first and second canisters, just wonder about the resin. Anyone know anything about this unit??
Chad Larsen
75g Reef
24g JBJ Nano
3g Picto
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bfessler View Drop Down
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Points: 1708 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bfessler Quote  Post ReplyReply Direct Link To This Post Posted: November 09 2009 at 10:12pm
If it has the color changing resin then it turns from blue to brown when it is nearly used up. It may still be good however and the only way to tell if it is totally exhausted is with a TDS Meter. The TDS should read 0. If it begins to show higher readings then it is time to change the media. BRS has a good video on the subject.
Burt

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spitdrumr View Drop Down
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Points: 97 		Post Options Post Options   Thanks (0) Thanks(0)   Quote spitdrumr Quote  Post ReplyReply Direct Link To This Post Posted: November 10 2009 at 5:15pm
Thanks Burt! I think i need to get a TDS meter. My resin is mostly brown, but still a bit of blue in it.
Chad Larsen
75g Reef
24g JBJ Nano
3g Picto
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bfessler View Drop Down
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Points: 1708 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bfessler Quote  Post ReplyReply Direct Link To This Post Posted: November 10 2009 at 5:20pm
You're probably still ok for a while then. I don't think it is completely exhausted even after it all turns brown.
Burt

An equal opportunity reefer,
I support all hobbyists and organizations involved in Marine Aquarium Keeping.
[email protected]
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