When should I change my DI resin?

homebrewdude · 01/22/2019, 05:27 PM

I have an RO system I use for drinking water and the ice maker.
I tee off to a DI canister that fills my 55gal drum.

I have filled this drum 2X in 2+ years.

How do I know when to change?

In have a TDS inline probe.
40+ incoming, 3 after RO and 2-1 after DI.

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unze · 01/22/2019, 05:51 PM

should come out at zero after DI

maddmaxx · 01/22/2019, 05:54 PM

Quote:

Originally Posted by unze

should come out at zero after DI

agreed. if its goes to 1 or above, then it needs to be changed.... but the vast majority of DI resin on the market these days are color changing. so visually you should be able to see that its just about exhausted honestly...

mcgyvr · 01/22/2019, 06:07 PM

Often people change it when post di tds is greater than zero..
One should certainly get more than 100gallons out of it though..
Are you giving it a few minutes of running before taking than tds reading?..(you should)..

homebrewdude · 01/22/2019, 06:36 PM

It is an inline probe, so it reads all the time.
I just thought the cheap probe was not accurate.

I guess I can just buy a bag of resin change the canister and see how it reads now.

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tkeracer619 · 01/23/2019, 12:18 AM

Quote:

Originally Posted by mcgyvr

One should certainly get more than 100gallons out of it though..

It probably dried out. Only used it 2 times in 2 years.

homebrewdude · 01/23/2019, 10:51 AM

And it sat unused almost 8 years before I used it the first time...

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mattgumaer · 01/23/2019, 12:22 PM

I always change when greater than 0. In the grand scheme of things in the reef hobby, I consider it short money to make sure my water is good.

Matt

homebrewdude · 01/27/2019, 07:59 PM

Where are people buying online at?

Do I need color changing if I have a meter?

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mfinn · 01/27/2019, 08:09 PM

Quote:

Originally Posted by homebrewdude

Where are people buying online at?

Do I need color changing if I have a meter?

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I buy mine at Bulk Reef Supply.

Color changing isn't necessary. Just a easy way to see when the resin is being used up.

taliesin · 01/27/2019, 08:38 PM

Bulk Reef Supply or airwaterice.com is also another place. I change mine when I get about 3/4 of the resin changed color. (To me it's better safe than wait until I have issues.) I've also got a inline reader that shows mine going in at 240+ and output is 0.

tkeracer619 · 01/27/2019, 11:53 PM

I prefer spectrapure for my DI carts. Key is to get it fresh.

Buckeye Field Supply is also a good source.

01/22/2019, 05:27 PM	#1
homebrewdude Registered Member Join Date: Sep 2006 Location: Dyer Posts: 995	When should I change my DI resin? I have an RO system I use for drinking water and the ice maker. I tee off to a DI canister that fills my 55gal drum. I have filled this drum 2X in 2+ years. How do I know when to change? In have a TDS inline probe. 40+ incoming, 3 after RO and 2-1 after DI. Sent from my SM-T710 using Tapatalk

01/22/2019, 06:07 PM	#4
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	Often people change it when post di tds is greater than zero.. One should certainly get more than 100gallons out of it though.. Are you giving it a few minutes of running before taking than tds reading?..(you should).. __________________ Who me?

01/27/2019, 11:53 PM	#12
tkeracer619 Registered Member Join Date: Jan 2006 Location: Westminster, CO Posts: 17,289	I prefer spectrapure for my DI carts. Key is to get it fresh. Buckeye Field Supply is also a good source. __________________ Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k.

01/22/2019, 05:51 PM	#2
unze Registered Member Join Date: Oct 2011 Posts: 411	should come out at zero after DI

01/22/2019, 06:36 PM	#5
homebrewdude Registered Member Join Date: Sep 2006 Location: Dyer Posts: 995	It is an inline probe, so it reads all the time. I just thought the cheap probe was not accurate. I guess I can just buy a bag of resin change the canister and see how it reads now. Sent from my SM-G955U using Tapatalk

01/23/2019, 10:51 AM	#7
homebrewdude Registered Member Join Date: Sep 2006 Location: Dyer Posts: 995	And it sat unused almost 8 years before I used it the first time... Sent from my SM-G955U using Tapatalk

01/23/2019, 12:22 PM	#8
mattgumaer Registered Member Join Date: Jun 2013 Posts: 561	I always change when greater than 0. In the grand scheme of things in the reef hobby, I consider it short money to make sure my water is good. Matt

01/27/2019, 07:59 PM	#9
homebrewdude Registered Member Join Date: Sep 2006 Location: Dyer Posts: 995	Where are people buying online at? Do I need color changing if I have a meter? Sent from my SM-T710 using Tapatalk

01/27/2019, 08:38 PM	#11
taliesin Registered Member Join Date: Apr 2006 Location: N. Garland Posts: 13	Bulk Reef Supply or airwaterice.com is also another place. I change mine when I get about 3/4 of the resin changed color. (To me it's better safe than wait until I have issues.) I've also got a inline reader that shows mine going in at 240+ and output is 0.