RODI set up ?
- Thread starter M3P
- Start date
Lance A. Lot
SLASH Member
Do you put the Granulated catalytic carbon in some sort of DI resin chamber or something? I am confused as to how one would use it in a normal RO/DI set up?
Lance A. Lot
SLASH Member
Yep. Looks just like the di resin cartridge.
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mpgrant77
New member
If I remember right. BRS did a test of carbon blocks with a chloramine water supply. I believe the Pentek Cloroplus carbon block preformed the best and had a pretty good life. I believe they are recommending placing the catalytic carbon in the first chamber and a pentek block in the second. From the looks of it I don't think it works better. I think it is just cheaper, $22 for a pentek block vs. $11 for catalytic carbon refill. I think the catalytic carbon works as a high level scrubber and the carbon block cleans up all the low levels left. To me seems like a mess and more work to empty and fill a DI canister vs swaping a block.
Lance A. Lot
SLASH Member
Does the club offer catalytic carbon for sale?
mpgrant77
New member
What carbon blocks were you using before you switched?
smoothdog
Active member
No, catalytic is a higher grade.
Don't remember specifically but they were the standard BRS blocks.
Tigé21v
Active member
I run an FX Chloraguard before a BRS .5 micron universal. Change out the universal when I get a .25ppm chlorine reading after a water run (LaMotte Instacheck test strip) . Usually I change the Chloraguard after the second or third universal. Usually somewhere between 350-400 gallons on each universal block, when the gallons produced between universal blocks drops off appreciably, that's when I change the Chloraguard.
I tried running the universal before the Chloraguard, and didn't have very good results. Seems having the Chloraguard to the "heavy lifting" works out best. Have not tried running two Chloraguards in series.
Have not tried the loose catalytic carbon.
I tried running the universal before the Chloraguard, and didn't have very good results. Seems having the Chloraguard to the "heavy lifting" works out best. Have not tried running two Chloraguards in series.
Have not tried the loose catalytic carbon.
my understanding is the standard blocks don't take out chloramine and you have to get the ones slightly more expensive knock out chloramine.
I agree though. I've been running 2 blocks in series and no issues that I know of. Not sure I want to change to catalytic carbon now...maybe if i were just starting the tank i'd be more inclined to make the swap.
smoothdog
Active member
I just change out my carbon when my DI resin changes color. Figure that's the safest way. I've been using it a little over a year and about to start on the 3rd cartridge of carbon. I'll probably get 5 or 6 fills out of the $30 bottle. I evaporate about 20g a week (less in the summer) between the 2 tanks, plus random water changes.
Buckeye Hydro
.Registered Member
We carefully reviewed the manufacturer's specifications when deciding which carbon blocks to carry for purposes of treating chloramine. Our Chloraguard filters provide the best value. I'd always opt for a chloraguard block over catalytic gac in a refillable cartridge.
Russ
Russ
clevername
New member
hmmm, wonder if this could explain why my DI never lasts more than 6months. I just assumed it was the cheap bulk stuff i bought off ebay.
Is there a test for Chloramine, i could test before the RO and then before the DI?
Other than normal reef tank paranoia, id like to know what exactly is going on
Is there a test for Chloramine, i could test before the RO and then before the DI?
Other than normal reef tank paranoia, id like to know what exactly is going on
Buckeye Hydro
.Registered Member
Test for total chlorine, and for free chlorine - the difference is the chloramine.
http://www.buckeyehydro.com/insta-test-free-and-total-chlorine-test-strips/
Russ
http://www.buckeyehydro.com/insta-test-free-and-total-chlorine-test-strips/
Russ
mpgrant77
New member
hmmm, wonder if this could explain why my DI never lasts more than 6months. I just assumed it was the cheap bulk stuff i bought off ebay.
Is there a test for Chloramine, i could test before the RO and then before the DI?
Other than normal reef tank paranoia, id like to know what exactly is going on
Saint Louis water supply uses Chloramines. If you are in Kirkwood I would almost guarantee that you have chloramine treated water.
