IceCap Dual DI Filter Canister
SKU: IC-DFC200
MSRP: $ 51.96
-
Available Through Authorized Retailer
- Dual Stage Deionization Pathway: Serial dual-stage configuration passes water through two consecutive cartridges, maximizing resin contact time to strip trace silicates and phosphates.
- High-Clarity Optical Canisters: Features two transparent, heavy-walled clear sumps that let you visually monitor color-changing DI resin depletion without opening the system.
- Heavy-Duty Top Mounting Bracket: Arrives pre-assembled onto a rigid, powder-coated structural steel bracket with built-in wall mounting holes for easy installation.
- Quick-Connect Plumbing Ports: Outfitted with integrated 1/4-inch push-fit quick-connect input and output elbow nodes (1/4in) that accept standard RO/DI poly-tubing.
- Universal 10-Inch Industry Fit: Accepts all standard 10-inch x 2.5-inch (10in×2.5in) refillable DI cartridges or pre-packed inline sediment and carbon blocks.
- Leak-Proof Dual O-Ring Seals: Top-cap junctions are sealed with heavy-duty EPDM rubber O-rings to ensure a completely leak-proof hold under high municipal line pressures.
IceCap
Premium aquarium equipment without the premium price. Protein skimmers, pumps, reactors, heaters & more.
IceCap Dual DI Filter Canister Assembly (IC-DIDFC)
The IceCap Dual DI Filter Canister Assembly (SKU: IC-DIDFC) is an authentic, medical-grade water purification add-on block distributed by CoralVue to upgrade or repair existing aquarium Reverse Osmosis (RO) systems. Generating pristine, contaminant-free water is the absolute baseline requirement for maintaining demanding stony coral reef ecosystems or delicate planted tanks. While a standard RO membrane successfully strips away roughly 95% to 98% of incoming tap water tap impurities, trace levels of highly volatile ions—such as silicates, nitrates, and phosphates—frequently sneak past the barrier. If left unchecked, these residual compounds quickly build up in your aquarium, feeding aggressive nuisance hair algae blooms and obstructing coral calcification. The IC-DIDFC stops these breakthrough contaminants by providing two consecutive stages of targeted deionization polishing.
This pre-plumbed unit is constructed with two heavy-duty, high-impact clear canisters mounted to a rugged steel bracket. Because the housings are crystal clear, they remove all guesswork from water room maintenance: you can watch your color-changing mixed-bed, cationic, or anionic resins shift colors from the bottom to the top as they become exhausted. The top caps feature standard 1/4" push-connect elbow fittings, allowing you to slice this dual stage effortlessly into any existing RO system's product water line. By running your water through two consecutive canisters, you can fully exhaust the first cartridge until it is completely spent, while the second "backup" canister catches any trace bleed-through—guaranteeing a rock-solid 0 TDS output and keeping your top-off water completely pure.
Key Features
Visual Resin Tracking: Clear canisters remove the hassle of constant testing, allowing you to instantly spot channels or premature resin exhaustion from across the utility room.
Stops Algae Fuel Breakthrough: Serial dual-stage flow gives your water maximum contact time with the resin beads, effectively capturing stubborn silicates and phosphates.
Zero-Friction Plumbing Splice: Built-in 1/4-inch quick-connect fittings allow you to easily snap standard poly-tubing into the unit without needing separate wrenches or thread sealant tape.
(Note: This filtration item includes the pre-assembled dual clear canisters, top mounting bracket, and 1/4" push-connect fittings. Refillable DI cartridges and bulk color-changing resin are sold under separate product categories).
What’s Included:
(1) IceCap Pre-Plumbed Dual DI Canister Assembly on Metal Mounting Bracket
(2) High-Clarity Clear 10-Inch Canister Sump Jars
(2) 1/4-Inch Push-Fit Quick-Connect Elbow Plumbing Fittings
(2) Leak-Proof Internal Cap EPDM O-Rings
Technical Specs:
Official Manufacturing Title: IceCap Dual DI Filter Canister
SKU / Factory Part Identifier: IC-DIDFC
Compatible Internal Cartridge Size: Standard 10" x 2.5" Shells
Plumbing Port Interface Node: 1/4-Inch OD Push-Connect Quick Fittings
Total Exterior Dimensions: 10.5"L x 5.5"W x 12.5"H (26.67 cm x 13.97 cm x 31.75 cm)
Maximum Rated Operational Pressure: 80 PSI Absolute Ceiling
Warranty
CoralVue, Inc. hereby guarantees this product to be free from defects in material and workmanship for a period of:
- 1 Year
Warranty is activated on the date of purchase.
This Standard Limited Warranty applies and is limited as follows:
- To the product only as long as it remains in the possession of the original purchaser.
- To the product that has not been subject to accident, misuse or abuse.
- To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
- That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
- That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
- Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.
- Unbox your IC-DIDFC canister block. Secure the steel mounting bracket to your wall, water station frame, or RO system skid using appropriate mounting screws through the pre-drilled bracket holes.
- Unscrew both clear canister bodies using a standard 10-inch filter housing wrench. Ensure the black EPDM rubber O-rings are seated flat inside their top cap groove lines.
- Slide your pre-filled, refillable DI resin cartridges down into the clear canisters. Important: Make sure the rubber gasket end of your DI cartridge is facing upward to form a correct seal against the internal top cap node.
- Thread the clear canisters back onto the top caps by hand, turning clockwise. Once hand-tight, give them a final gentle 1/4-turn snug down using a housing wrench. Do not over-tighten, as this can crush the internal O-ring.
- Take the product water line coming out of your RO membrane housing and push it firmly into the 1/4" push-fit elbow fitting on the "Inlet" side of the bracket.
- Connect a fresh piece of 1/4" poly-tubing to the "Outlet" side of the bracket and route it directly into your clean water storage barrel or float valve array. Turn on your water supply slowly and check all joints for leaks.
Pro Tips:
- Use the "Daisy-Chain Rotation Method" to Save Money on DI Resin Refills. When your dual-canister system finally begins to exhaust, you will notice the color-changing resin in the first canister turn completely brown or blue, and your inline TDS meter will tick up from 0 to 1. Do not dump both canisters! Instead, throw away the exhausted resin inside the first canister only. Take the half-used second canister and move it to the first position, then place your freshly packed resin cartridge into the second position. This rotation method ensures you extract 100% of the usage capacity out of every ounce of resin without ever risking contaminant bleed-through into your storage tank.
- Always Grease Your Canister O-Rings with Pure Food-Grade Silicone Compound. Every time you open your clear canisters to swap out your DI resin, pull the black rubber O-rings out of the upper caps and wipe them down with a clean paper towel. Apply a tiny, thin smear of 100% food-grade silicone grease (never use petroleum jelly like Vaseline, which will rot and dissolve rubber seals over time) across the ring before reassembling. This keeps the rubber soft, prevents pinhole leaks under pressure shifts, and makes the canisters effortless to unscrew during your next maintenance cycle.
- Flush Your RO Membrane for 60 Seconds Prior to Letting Water Enter the DI Canister. Whenever an RO/DI system sits idle for a few days, a phenomenon called "TDS Creep" occurs. Static water sitting inside the membrane slowly equalizes, meaning that the first few ounces of water pushed through the line when the system clicks back on will hold a very high TDS spike (often 30+ PPM). If this initial burst rushes straight into your DI canisters, it will rapidly deplete your expensive resin. Installing a manual flush valve before your DI block allows you to dump that initial dirty water down the sink drain for a minute, protecting your DI stage and drastically extending your resin's lifespan.