Poll: How often do you change your DI resin?

[rockskimmerflow]

Weekly... but Im in socal so I have 350+ TDS incoming and I make a ton of water - 1000g roughly a week. Gotta keep that 0 TDS, and it aint cheap.

 

[dgrigor02]

Considering I use dual big blue cannisters that holds close to 14lbs worth, shouldn't be too surprising that I get 11-12 months out of it.

 

[trido]

With TDS of 14 out of the tap... Not very often. lol

I run 28-35 out of the tap. I ditched the RO a few years ago and only run with sediment filters and DI. I change it out every few months.

 

[mitch91175]

Mine last me less than 3 months now. About to add a 2 stage DI resin to see if I can get around 4-5 months before changing.

 

[DarkSky]

14 tds out of the tap, change my resin after about 8-12 months depending on how good I am with my water change schedule.

My current tank is 45 gallons. In the process of building a 220g DT, 300 gallon system. I'm sure my use will increase dramatically.

 

[Sppf121]

I live on well with 400 TBS my RO does a great job bringing it down to about 12-15 before the DI resin cartridges, but I am still only getting about 120 gallons per cartridge. I am thinking it has to do with high CO2 levels but I am not cost effective way to fix that. That being said it seems like I’m on par with most of the other people that have well system set up .

 

[Spdjnky]

Change when TDS = 1 around 100 gallons as my TDS out of tap is around 220

 

[Ento-Reefer]

I usually get about 150g before I see 1 tds on my 2nd mixed bed di chamber. I am on a well and tds in is about 140 before the membrane and 3-4 after. I am sure C02 is the main reason for this.

 

[CountryReefer]

I have well water....800tds. 8 stage system.

5 micron sediment, 1 micron sediment, pair 1 micron carbon, 99% spectrapure membrane, cation resin, anion resin, mixed bed resin.

The spectrapure membrane takes me down to 7 TDS. Due to the extremely high C02 I used the anion resin in 35 gallons. Started a de gassing barrel, now I'm at 150 gallons and the resin is still original color. So I am guessing at least 6 months.

I need to find a pump that pumps slower, currently it's at 1135ml a min (~1/4 gallon a min). BRS recommend their 50 ml hour dosing pump. But that would put me making just hair over 19 gallons a day.

 

[David S]

I changed my DI several months ago after using the original DI for over 4 years.
Actually, I could have continued with the old DI as the TDS was barely 1, but I thought maybe it was time for a change.
Some perspective:
Live in NYC where the TDS from the tap is low.
Run dual RO membranes, and the TDS is virtually 0 prior to entering the DI phase.
I do about 8% weekly water change on my 38 gallon reef.

 

[Opus]

My tap tds runs between 400 and 450. I get a tds of 4 after the RO membrane. Based on a 4 TDS I will get around 1110 gallons of 0 TDS water from my DI catridge. I make around 10 gallons a week so should go about 2 years.

 

[JMetaxas]

I get about 100 gallons, or so. I'm on well water.

I recently switched to the BRS Cation/Anion/Mixed Bed system and it's been a disaster. I'm getting higher TDS out of my DI canisters than out of the RO now. (RO alone does 2-3 ppm TDS)

I now get between 5-15 after the final stage of the Cation/Anion/Mixed Bed. I check it with two TDS meters too. Very strange. I spoke with BRS and they said it should go to zero after flushing a few gallons through. Nope, same crap. I'm at a loss what to do.

Something is very wrong.

 

[trido]

I have well water....800tds. 8 stage system.

]

Wow!!! that is some serious commitment and an amazing impressive purification system.

 

[Saltyanimals]

I used to change after TDS goes to 1 but I’ve been experimenting and changing DI less. I’ve been letting it go to 4-5 without any issues for months on an sps tank. . The background is I read several people that have bought LFS water and turns out that water tested 10 TDS unknowingly and didn’t seem to cause issues in their tank. I don’t think I’ll let mine get higher than 5, but starting caring slightly less about getting zero or 1.

 

[KIRBLIT]

Double post

 

[KIRBLIT]

I get about 100 gallons, or so. I'm on well water.

I recently switched to the BRS Cation/Anion/Mixed Bed system and it's been a disaster. I'm getting higher TDS out of my DI canisters than out of the RO now. (RO alone does 2-3 ppm TDS)

I now get between 5-15 after the final stage of the Cation/Anion/Mixed Bed. I check it with two TDS meters too. Very strange. I spoke with BRS and they said it should go to zero after flushing a few gallons through. Nope, same crap. I'm at a loss what to do.

Something is very wrong.

That's pretty strange, could be your configuration though. Should go anion/cation/mixed bed. For well water the high co2 eats up Anion very quickly so the first di is the only one you should be burning through at a very high rate. Give it a shot and see if it helps.

 

[Labridaedicted]

Tds at the tap is 390 from my well. I use a looooooooot of water, so my resin is usually shot after 2 months or so.

 

[Lighthouze08]

i don't usually change it out until it reads 2-3 tds

 

[KingJason]

When the TDS meter stays above .01 after 5 min or so and doesn’t go to 00.

 

[Whispers]

Mines been running since March and it hasn’t changed any color still looks new I’ve changed one carbon and two sediment already I’m a Lil concerned