Elmareefer
New member
Getting back into this..... I have a 60 gallon AIO tank coming and I need an RODI system. Preferably on amazon since i have gift cards for it. What RODI system do you recommend? also are filter replacements easy to get?
Which RODI system to buy?
- Thread starter Elmareefer
- Start date
kfisc
Well-known member
I had good luck with Spectrapure. Doing it all over again, I'd get the model below. Well worth the money.
Eliminator® 4 RODI Systems w/ Manual Flush - 90GPD-150GPD
Eliminator® 4 RODI Systems w/ Manual Flush - 90GPD-150GPD
wvned
Well-known member
I dont see a brand I recognize on Amazon. But, what you want is a 4 stage system if you have decent water to start with that looks like this
https://www.amazon.com/Aquatic-Life-Deionization-Filtration-Cartridge/dp/B09MTS1BCM/ref=sr_1_35?crid=3SYX7AT5E3A62&dib=eyJ2IjoiMSJ9.ByOA7AMOBSh-1xb0elsZ-RlhKyNrdn8FnZDlmnvXMRIKfLkgqlnTfUffnTWg35F0IliGXoByrlX8q0Iu-Nq4USzigDNlVotryF3DQmG0YBO8tMGPYofyVz3JP5w6z_7Gt1MwD2xX_uZV1nrsrh8wJ1he_x8_vZ4OjDzhPWAvBKcFv12TrKa9ms-zptYqIqYbQbzw0sQC-QVzT9WN5VimJB1pm4mIySTWDcvvdiJ5B2Mg0qxYZYgHw2wA-8U7M0oR6TDI9xKyHkgsh-4zwV2VunE7HDKzdU0MZqoz0H8E0K8.9H5EqEot5WsW0mGwvJ5GUTjNk9DrMvE3lBG1D0TA8DY&dib_tag=se&keywords=75gpd+rodi&qid=1767216426&sprefix=75gpd+rodi,aps,122&sr=8-35
One of these takes standard water purification media that looks like this.
RO membrane, sediment filter, DI canister and carbon block. Available on Amazon, eBay or Bulk Reef Supply and anywhere that sells water purification stuff.
2 things that are nice are a pressure gauge and a dual inline TDS meter that reads the water going into the resin and that coming out.
For a 60 gallon tank a 75 or 100 gallon a day is good.
https://www.amazon.com/Aquatic-Life-Deionization-Filtration-Cartridge/dp/B09MTS1BCM/ref=sr_1_35?crid=3SYX7AT5E3A62&dib=eyJ2IjoiMSJ9.ByOA7AMOBSh-1xb0elsZ-RlhKyNrdn8FnZDlmnvXMRIKfLkgqlnTfUffnTWg35F0IliGXoByrlX8q0Iu-Nq4USzigDNlVotryF3DQmG0YBO8tMGPYofyVz3JP5w6z_7Gt1MwD2xX_uZV1nrsrh8wJ1he_x8_vZ4OjDzhPWAvBKcFv12TrKa9ms-zptYqIqYbQbzw0sQC-QVzT9WN5VimJB1pm4mIySTWDcvvdiJ5B2Mg0qxYZYgHw2wA-8U7M0oR6TDI9xKyHkgsh-4zwV2VunE7HDKzdU0MZqoz0H8E0K8.9H5EqEot5WsW0mGwvJ5GUTjNk9DrMvE3lBG1D0TA8DY&dib_tag=se&keywords=75gpd+rodi&qid=1767216426&sprefix=75gpd+rodi,aps,122&sr=8-35
One of these takes standard water purification media that looks like this.
RO membrane, sediment filter, DI canister and carbon block. Available on Amazon, eBay or Bulk Reef Supply and anywhere that sells water purification stuff.
2 things that are nice are a pressure gauge and a dual inline TDS meter that reads the water going into the resin and that coming out.
For a 60 gallon tank a 75 or 100 gallon a day is good.
I use geek pure off Amazon to make 25g per week for my 250g system.
Been using is for many years and changed filters twice.
They have replacement filters and easy to change.
Theirs a 3 stage and 4 stage so if you go 3 stage you’ll need to add your own DI cartridge.
Small but effective and inexpensive, attaches right to sink faucet.
Been using is for many years and changed filters twice.
They have replacement filters and easy to change.
Theirs a 3 stage and 4 stage so if you go 3 stage you’ll need to add your own DI cartridge.
Small but effective and inexpensive, attaches right to sink faucet.
Elmareefer
New member
City water. Will a 4 or 5 stage take care of that?
Elmareefer
New member
You’ll need to ask the water provider if they use chloramines. Some municipalities do (mine included) and some don’t.
If your municipality does not use them, no need to worry. If they do, you’ll want a config like this:
Sediment filter > carbon filter > chloramine cartridge > RO membrane > DI*
DI depending on your water and TDS could mean just a mixed bed or cation followed by anion or cation followed by anion followed by mixed bed.
Missouri American Water uses chloramines, my RODI is custom built and configured as follows:
Sediment
Carbon
Chloramine
Membrane
Cation
Anion
Mixed Bed
That’s a great basic system, again, as long as there aren’t chloramines in your water. If there are, just add a filter to make the following:
Sediment in the add on filter
Carbon
Chloramine
Membrane
Mixed Bed DI
Another thing to consider, is your water pressure. You want around 60 PSI across the membrane. If you don’t have that, you’ll want a booster pump. Without that pressure, your system will under perform and exhaust DI resin fast.
Lastly, do a search on this forum for TDS creep
To make it simpler, buy the BRS system. See how things go and we can help you add on if needed.
Sorry, I tend to go a bit overboard with RODI stuff as that’s something I really understand in this crazy hobby.
. Happy New Year!!!
wvned
Well-known member
The parts are all standard, interchangeable and common.
This is the same 4 stage I hooked up in the kitchen. With some additions.
added 2nd inline TDS meter. Placed 2 20 inch resin canisters. Repurposed the original ones to run a second sediment filter and carbon block in series. Added a second 75gpd membrane in series called a water saver upgrade. Added a booster pump and auto flush is done by my Hydros controller as well as turning the entire thing on/off when water is required.
It's like Lego blocks.
Coming soon is 3 100gpd membranes in parallel with a manually adjusted flow restrictor. The stuff is here already.
I have never worried about TDS creep. Yes it is a thing. But to me the 5 seconds it takes a properly maintained filter to go back to 0 TDS output is nothing to worry about.
Dont drink the water made and stored. No it isn't going to dissolve your bones or teeth or kill you. But there is no chlorine in it to kill any pathogens that might get in.
This is the same 4 stage I hooked up in the kitchen. With some additions.
added 2nd inline TDS meter. Placed 2 20 inch resin canisters. Repurposed the original ones to run a second sediment filter and carbon block in series. Added a second 75gpd membrane in series called a water saver upgrade. Added a booster pump and auto flush is done by my Hydros controller as well as turning the entire thing on/off when water is required.
It's like Lego blocks.
Coming soon is 3 100gpd membranes in parallel with a manually adjusted flow restrictor. The stuff is here already.
I have never worried about TDS creep. Yes it is a thing. But to me the 5 seconds it takes a properly maintained filter to go back to 0 TDS output is nothing to worry about.
Dont drink the water made and stored. No it isn't going to dissolve your bones or teeth or kill you. But there is no chlorine in it to kill any pathogens that might get in.
Last edited:
Ned is now officially my brother from another mother when it comes to RODI. You build RODI like I do.
Guygettnby
Well-known member
I have always used a cheaper kit from purewaterclub.com when they were around and added on a BRS dual DI setup to it. BRS sells a pretty decent budget friendly setup that works. Mine used to be 7 stage, but in the end it is now 6 stage. I still running a 100gpd membrane, but will be switching to a 75gpd when it needs replacing.
In the end, I honestly dont think the housings matter much as long as they do the job. The filters inside are much more important imho
In the end, I honestly dont think the housings matter much as long as they do the job. The filters inside are much more important imho
wvned
Well-known member
That is true but there are housings that are cheaply made and crack. That is hard to tell from pics on the net.
Mine was a 4 stage from BRS but they were as cheap as anyone back then.
Elmareefer
New member
wvned
Well-known member
That is a good place to start.
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