This DI cartridge contains the freshest high quality resin you can purchase on the planet

lab-grade RO/DI water for your reef

✔ Built to Outlast Our filter arrays have heavy-duty prefilters

20" Refillable Cartridge - Clear

We offer many system options directly on the product pages so you can get the exact system you need

20" Activated Carbon Block 10" This DI cartridge contains the20" 5 mic. Activated Carbon Block. 2. 5 GPM HFR (High Flow Rate) carbon block filters allow your membrane(s) to get ideal pressure for better rejection rates better membrane rejection rates = longer DI resin life. 20" 5 micron Carbon block Illustrations Diagrams Instructions How to Change Filters