IceCap Dual DI Filter Canister

The IceCap Dual DI Filter Canister is a two-stage deionization add-on for polishing water after your RO membrane, dropping TDS to as close to zero as your DI resin allows.

• Dimensions: 10.5in x 5in x 14.25in
• Canisters: uses standard 10in DI canisters/cartridges
• Connections: 1/4in push-connect fittings
• Indicator: color-changing resin — shifts from blue to brown as it exhausts
• Stages: dual (two DI cartridges in series for deeper polishing)

An RO membrane alone typically leaves single-digit TDS; a DI stage after it is what gets reef-tank makeup water down to 0 TDS, removing the last traces of ammonia, phosphate, nitrate, and silicate an RO membrane can pass through. Running two stages in series means the first cartridge does the bulk of the work and the second catches any breakthrough, extending the time between full resin changes.

Includes: dual canister housing with 1/4in push-connect fittings. DI resin and refillable cartridges are sold separately — check color-change status with a TDS meter for best accuracy.

Compatible with: IceCap 4-Stage RO/DI systems and other standard 10in RO/DI setups.

At Marine Concept Supply, all sales are final. Due to the sensitive nature of live animals and aquatic products, we do not accept returns or exchanges under any circumstances. Please review your order carefully before completing your purchase. No Cancellations.

If you have any questions or concerns about your order, please contact us at shop@marineconceptsupply.com and we’ll do our best to assist you.

We Ship UPS and will send tracking as soon as the item ships. 

Return shipping for any approved warranties are not covered and will be subtracted from the approved credit total.

Restock Fees apply to some products, due to their size or a manufacturer policy.Each product with a restock charge is marked online, in the description.

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right