RODI resin question

vader88 · 07/01/2012, 04:21 PM

Out of my RO membrane I'm at 7ppm, after running through the DI, it only drops to 5ppm. This is with new resin also from BRS. In the past I've always been at 0ppm after resin, but not now. I guess it's possible I got bad resin, but I'm hesitant to think so. Any idea why I would get these readings besides a faulty TDS meter, it's a inline btw.

shifty51008 · 07/01/2012, 05:15 PM

when was the last time you calibrated the TDS meter?

vader88 · 07/01/2012, 05:29 PM

Quote:

Originally Posted by shifty51008

when was the last time you calibrated the TDS meter?

ummm....between now and never ? Guess I should look into that

Buckeye Hydro · 07/01/2012, 05:51 PM

Quote:

Originally Posted by vader88

Out of my RO membrane I'm at 7ppm, after running through the DI, it only drops to 5ppm. This is with new resin also from BRS. In the past I've always been at 0ppm after resin, but not now. I guess it's possible I got bad resin, but I'm hesitant to think so. Any idea why I would get these readings besides a faulty TDS meter, it's a inline btw.

If you have an inline TDS meter, make sure the probes are aligned correctly.

Also check the DI cartridge and see if it looks like the top portion has changed color already.

Russ

Yogre · 07/01/2012, 06:06 PM

Quote:

Originally Posted by BuckeyeFS

If you have an inline TDS meter, make sure the probes are aligned correctly.

Also check the DI cartridge and see if it looks like the top portion has changed color already.

Russ

How should the probes be aligned? I have inline meters myself and I'm not sure they're set up correctly.

vader88 · 07/01/2012, 06:20 PM

Quote:

Originally Posted by Yogre

How should the probes be aligned? I have inline meters myself and I'm not sure they're set up correctly.

Just did some reading about the probes and it may have been my problem all along. I'm going to change the resin since it has been in for about a month and that is how long I generally last because of my high co2 from the well.

Yogre,

You want the probes aligned so they are parallel with the fitting ( if you look through the fitting, you should see only one probe, NOT TWO )

Buckeye Hydro · 07/01/2012, 06:34 PM

Quote:

Originally Posted by vader88

You want the probes aligned so they are parallel with the fitting ( if you look through the fitting, you should see only one probe, NOT TWO )

Other way around...

If you took the tube out of one side of the tee, you want to see two probes side by side.

Russ

vader88 · 07/01/2012, 06:43 PM

Quote:

Originally Posted by BuckeyeFS

Other way around...

If you took the tube out of one side of the tee, you want to see two probes side by side.

Russ

Russ,

this is what I read........I understood it as, if you inserted the probe in the bottom of the T, you should only see one probe. Heres the link, it's under directions.

http://www.waterfilters.net/HM-Digit...-Monitor.html#

Buckeye Hydro · 07/01/2012, 08:45 PM

You read those directions correctly, but unfortunately...the directions on that site are wrong!

Here's a graphic clipped from the DM1 instructions:

Russ

vader88 · 07/01/2012, 08:49 PM

Quote:

Originally Posted by BuckeyeFS

You read those directions correctly, but unfortunately...the directions on that site are wrong!

Here's a graphic clipped from the DM1 instructions:

Russ

Well, I definitely can't argue that.

Thanks

Yogre · 07/01/2012, 09:01 PM

Thanks, guys, my probes are set up wrong, they're parallel to the water flow.

I'll correct them next RO/DI run, it's great learning stuff on this site.

Buckeye Hydro · 07/02/2012, 03:33 AM

As if this stuff isn't complicated enough w/o getting flat out wrong information from sources you'd think were reliable!

allsps40 · 07/02/2012, 10:47 AM

Yeah that does not sound right only 7ppm out of the RO is pretty good. I get 10-12pmm out of my 90GPD Spectra Pure unit after the RO. I also run BRS DI resin and I get 0ppm when the resin is good.

vader88 · 07/02/2012, 07:36 PM

I guess there was a problem with the resin or somehow I packed badly. I remember initially refilling my cartridge and still had 3ppm. Went ahead and changed out the resin and I now have 0ppm. Will keep a eye on it and see what's going on.

Buckeye Hydro · 03/26/2013, 06:31 AM

Here's the graphic that is missing above:

HUNTER1 · 03/26/2013, 08:43 AM

That doesn't sound right at all. I have BRS 75gpd, after six months it red 10ppm out of DI and my tap is 480ppm. I just changed the resin few days ago and minutes after I changed it, it reads zero. Something is wrong somewhere in your readings. It's just not possible to just drop to 5 from 7ppm.

07/01/2012, 04:21 PM	#1
vader88 Dolphin Finatic Join Date: Jun 2007 Location: Trinity, NC Posts: 844	RODI resin question Out of my RO membrane I'm at 7ppm, after running through the DI, it only drops to 5ppm. This is with new resin also from BRS. In the past I've always been at 0ppm after resin, but not now. I guess it's possible I got bad resin, but I'm hesitant to think so. Any idea why I would get these readings besides a faulty TDS meter, it's a inline btw.

07/01/2012, 05:15 PM	#2
shifty51008 12-5 Chiefs record Join Date: Mar 2010 Location: NW Iowa Posts: 10,134	when was the last time you calibrated the TDS meter? __________________ 75 gal. mixed DT, 100 gal. sump, 50 gal. fuge, Clownfish breeder

07/01/2012, 09:01 PM	#11
Yogre Cheesehead Reefer Join Date: Jan 2009 Location: Madison, Wisconsin Posts: 1,351	Thanks, guys, my probes are set up wrong, they're parallel to the water flow. I'll correct them next RO/DI run, it's great learning stuff on this site. __________________ "Learn from yesterday, live for today, hope for tomorrow." ~ Albert Einstein Current Tank Info: 215 gal TBS Reef

07/02/2012, 10:47 AM	#13
allsps40 Registered Member Join Date: Aug 2010 Location: Arizona Posts: 4,627	Yeah that does not sound right only 7ppm out of the RO is pretty good. I get 10-12pmm out of my 90GPD Spectra Pure unit after the RO. I also run BRS DI resin and I get 0ppm when the resin is good. __________________ __________ Current Tank Info: Past reef tanks: 20H softy, 29G mixed reef, 55G mixed reef, 40B sps dominant mixed reef and 75G sps dominant mixed reef. No tank currently

07/01/2012, 08:45 PM	#9
Buckeye Hydro .Registered Member Join Date: Sep 2006 Location: Cincinnati, Ohio Posts: 4,857	You read those directions correctly, but unfortunately...the directions on that site are wrong! Here's a graphic clipped from the DM1 instructions: Russ

07/02/2012, 03:33 AM	#12
Buckeye Hydro .Registered Member Join Date: Sep 2006 Location: Cincinnati, Ohio Posts: 4,857	As if this stuff isn't complicated enough w/o getting flat out wrong information from sources you'd think were reliable!

07/02/2012, 07:36 PM	#14
vader88 Dolphin Finatic Join Date: Jun 2007 Location: Trinity, NC Posts: 844	I guess there was a problem with the resin or somehow I packed badly. I remember initially refilling my cartridge and still had 3ppm. Went ahead and changed out the resin and I now have 0ppm. Will keep a eye on it and see what's going on.

03/26/2013, 06:31 AM	#15
Buckeye Hydro .Registered Member Join Date: Sep 2006 Location: Cincinnati, Ohio Posts: 4,857	Here's the graphic that is missing above:

03/26/2013, 08:43 AM	#16
HUNTER1 Registered Member Join Date: Sep 2012 Posts: 1,044	That doesn't sound right at all. I have BRS 75gpd, after six months it red 10ppm out of DI and my tap is 480ppm. I just changed the resin few days ago and minutes after I changed it, it reads zero. Something is wrong somewhere in your readings. It's just not possible to just drop to 5 from 7ppm.