Bulk Reef Supply

4.5" x 10" Clear Refillable Cartridge for DI Resin

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Filling a DI Cartridge is easy. The most important thing to remember is to tightly pack the DI resin into the cartridge. Loose DI will cause the water to channel through the DI, greatly reducing the effectiveness.

Available in Four Sizes:

  • 2.5" x 10" Cartridge (Standard - most used cartridge size)
  • 4.5" x 10" Cartridge
  • 2.5" x 20" Cartridge
  • 4.5" x 20" Cartridge

NOTE: 99% of customers purchase the 2.5" x 10" Cartridge (SKU 200002)


How to refill an empty DI Cartridge

  • Unscrew the bottom cap from the DI cartridge and remove the foam ring.
  • Pour in the DI resin and pack it down tightly as hard as you can. Tap on a counter to help settle the resin.
  • At this point the resin should be tightly packed flush to the rim.
  • Put the foam ring back inside the screw cap and screw the cap on.
  • Place the newly filled cartridge into the RO canister and make sure the arrow on the side of the cartridge points up.


DI Cartridge Refill Instructions

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Product Questions

How much co2 media will a standard 10" cartridge hold?
Question by: Carlos Feliciano on Jan 13, 2023, 8:39 PM
These will hold a single refill bag, or approximately 1.2lbs.
Answer by: William Reed (BRS Staff) on Feb 2, 2023, 8:49 AM