Bulk Reef Supply

Pre-Packed Bulk Deionization Resin (Color Changing) - Bulk Reef Supply

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Deionization (DI) Resin is used as the last stage of a RODI system to reduce any remaining total dissolved solids (TDS) down to undetectable levels, making perfect water for reef tanks.

  • Professionally Packed
  • Color Changing (Changes from blue to brown as it depletes)
  • Vacuum packed in foil-lined 4mm Mylar bags for a long shelf life
  • Includes Refillable 10” Cartridge
  • Nuclear Grade


Pre-Packed DI Cartridges let you just remove and replace your current DI cartridge without having to repack it with new resin that takes time, and can create a mess. Packing the resin tightly is very important and with our custom DI packing press, we can now offer a superior DI cartridge that will help prevent water channeling through the resin. Our cartridges are compatible with all BRS RODI systems and also other brands like Aquamaxx, Spectrapure, AquaFX, IceCap, etc.


Deionization Resin will start to deplete as soon as it is exposed to air and traditional plastic packaging allows for a small amount of air transfer that will degrade the lifespan of the resin. All BRS DI resins are vacuum sealed in a 4mm foil-lined Mylar bag, that removes all the air and keeps it out! With the mylar bags, we have found they keep the resin fresher for longer.


To get maximum life from your DI resin please takes the following steps

  • Ensure optimal operation of your RO membrane. The higher your membranes rejection rate the fewer TDS your product water will contain resulting in longer lasting resin. The best way to keep the membrane rejection rate up is to monitor and change your prefilters appropriately as well as maintain at least 50psi going into the membrane.
  • Ensure the resin is packed in the cartridge securely. The resin should be packed very tightly. When squeezed, there should be almost no flex to the cartridge.
  • The initial couple minutes of water from your RO membrane will always be high, this is commonly referred to as TDS creep. Diverting the first few minutes of water down the drain can often greatly reduce DI resin consumption.
  • Maintain low levels of carbon dioxide in your water supply. Excess carbon dioxide will deplete DI resin quickly. If you are depleting resin quickly and have already: addressed the two options above, excess carbon dioxide is the likely culprit. You have two choices:
  • Collect the water coming from your RO system in a large container, add a power head or air stone and allow the CO2 to gas off. Then pump the water through your DI resin.


What's Included?

1x 2.5" x 10" Cartridge Pre-Packed with Color Changing DI Resin

More Information
Product Name Pre-Packed Bulk Deionization Resin (Color Changing) - Bulk Reef Supply
SKU 200124
UPC 853710007285
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Product Questions

Do you have the prepacked di resin with a 6 stage replacement package ?
Question by: Joseph M Gizzi on Feb 1, 2019, 8:38 PM
Hey there,
Thanks for reaching out. We do not currently offer a pre-packed DI resin option for the pro series but I know it is something we are exploring as an option.
Let us know if you have any other questions!
Answer by: William Glenn on Feb 5, 2019, 3:52 PM
Is this cartridge compatible with Spectrapure CSPDI 90 GPD filter?
Question by: Jonathan Antunes on Nov 26, 2017, 9:12 PM
Yes, if your system uses standard 10" Canisters then it will be compatible.
Answer by: Charlie on Nov 27, 2017, 6:57 AM
Is the canister of this product reusable? ie: once depleted can I empty it and refill it with more color changing resin?
Question by: Daniel Howe on Mar 20, 2019, 4:36 AM
Great question! Yes once the resin has exhausted you can refill this cartridge with a new bag of our DI resin. Let us know if you need additional information. Thanks!
Answer by: Nick Gansen on Mar 25, 2019, 2:41 PM
Is there a difference in quality between standard DI Resin and Color Changing DI Resin. I use TDS meter anyway. Thank YOU . Ron
Question by: Ron Sorenson Sorenson on Jan 29, 2018, 12:41 PM
There is a slight difference in efficiency that benefits the non-color changing resins, but the performance change is negligible. We have found that the color changing resin usually yields better results since it gives you a reminder to look at your TDS meter when the color starts to change.
Answer by: Charlie on Jan 29, 2018, 5:37 PM
Is this a quick connect / disconnect inline filter?
Question by: Steven on Oct 28, 2017, 5:16 PM
Hey there,

These are not inline nor quick connect. These are specifically designed to be utilized in a standard 2.5" x 10" RODI canister. :-)
Answer by: Randy on Nov 25, 2017, 8:37 AM
What is the estimated shelf life for pre-packed DI resin?
Question by: Richard on Jan 8, 2018, 1:11 PM
Thanks for contacting BRS!
The shelf life for the mixed DI resin would be 2 years. Have a great day!
Answer by: Noah Winn on Jan 11, 2018, 4:46 PM
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