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IceCap RO Deionization Resin, 1.25lbs (Single-Fill)
SKU: IC-RI-DIRES125
Guaranteed Zero TDS Output: Operates as a high-affinity chemical polisher to trap remaining dissolved minerals, ensuring ultra-pure water for delicate reef ecosystems.
Virgin Mixed-Bed Formulation: Compounded strictly from 100% brand-new, un-reclaimed raw resin beads to deliver maximum ionic capacity and longevity.
Vibrant Visual Color Change: Transitions distinctly from a deep blue/green shade to a light amber/brown tone as the internal chemical capacity becomes fully exhausted.
Pre-Portioned Single Fill Volume: Perfectly weighed at 1.25 lbs (~20 oz) to completely fill one standard 10-inch transparent twist-off RO/DI cartridge with zero wasted leftovers.
Foil-Lined Vacuum Packaging: Factory sealed inside an air-tight, moisture-locking Mylar bag to prevent premature air exposure and extend un-opened shelf life.
Universal Cartridge Architecture: Universally sized to pour perfectly into IceCap Smart RO/DI systems as well as standard 10" refillable shells from any brand.
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IceCap Color-Changing Mixed Bed Deionization Resin — 1.25 lbs (SKU: IC-RI-DIRES125)
The IceCap 1.25 lb Color-Changing Mixed Bed Deionization Resin (SKU: IC-RI-DIRES125) is an authentic, professional-grade water purification medium distributed by CoralVue to provide pristine, contaminant-free baseline water for marine reef displays and advanced freshwater aquascapes. While high-performance reverse osmosis (RO) membranes are highly effective at rejecting the vast majority of tap water impurities, small atomic-weight ions like silicates, phosphates, and nitrates can still sneak through into your collection bucket. If left unchecked, these residual impurities can fuel stubborn nuisance algae outbreaks and stress sensitive stony corals. The IceCap DI resin serves as an ironclad final boundary, utilizing highly tuned canine and anion exchange beads to grab those final trace minerals and lock your output at absolute 0 TDS.
The primary operational advantage of the IC-RI-DIRES125 blend centers on its True Color-Indicating Virgin Matrix and Single-Use Convenience. Buying massive bulk boxes of loose resin can be messy, and storing leftover media requires airtight containment to stop it from drying out. This pre-measured 1.25 lb bag completely eliminates product waste, offering exactly what you need to repack a standard 10-inch cartridge profile. As the ionic capacity of the bed slowly depletes from the bottom up, the media undergoes a sharp visual transformation, turning from deep blue to a distinct amber brown. This explicit visual feedback eliminates the guesswork of water management, showing you exactly when it's time to replace your media.
Key Features:
Prevents Destructive Algae Blooms: Stripping out silicates and phosphates stops diatom films and hair algae from taking hold in your display tank.
Clear Exhaustion Tracking: The bright color-changing interface lets you monitor your remaining filter life at a single glance through your clear canister.
Pre-Measured No-Waste Sizing: Portioned specifically for single-canister updates, eliminating the need to store open, loose bags of sensitive damp media.
Note: This retail package includes (1) vacuum-sealed 1.25 lb bag of IceCap Color-Changing DI resin. Refillable clear cartridge housings and RO canister wrenches are sold under separate water purification categories.
What’s Included:
(1) 1.25 lb Bag of Genuine IceCap Color-Changing Mixed Bed DI Resin Media
Technical Specs:
Official Manufacturing Title: IceCap 1.25 lb Deionization Resin
SKU / Factory Part Identifier: IC-RI-DIRES125
Media Classification Base: Virgin Nuclear-Grade Mixed-Bed Ion Exchange Resin (Cation/Anion Blend)
Visual Indicator Range: Deep Blue/Green (Fresh) to Amber/Brown (Exhausted)
Total Net Packaging Weight: 1.25 lbs (1.25lbs / ~20 oz)
Expected Maintenance Yield: Refills a standard 10” clear RO/DI insert shell exactly 1 time
Packaging Integrity Framework: Foil-Lined, Multi-Layer Heavy Vacuum Mylar Shroud
Target Water Quality Threshold: Reduces product line Total Dissolved Solids down to 0 ppm (0TDS)
While most of our equipment carries a one-year manufacturer's warranty, consumable products like fish and coral foods are not covered under traditional warranty terms due to their perishable nature and varied storage conditions. However, we fully stand behind the quality of every product we sell. If you experience any issues with your food purchase shortly after receiving it, such as concerns about freshness, packaging integrity, or product quality, please contact us at [email protected]. We're committed to making it right and will work with you to resolve any problems quickly and fairly.
- Turn off your source water supply line feeding your RO/DI system and open a flush valve to relieve any remaining internal water pressure.
- Use a standard universal canister wrench to unscrew your clear DI stage filter housing. Remove the refillable internal cartridge insert and pull off its top cap along with the foam sediment ring.
- Dump the exhausted, brown-colored resin out of the cartridge body into a waste basket. Rinse the interior of the empty acrylic cartridge shell with fresh RO water to clear out any stray beads or biological film.
- Insert a clean kitchen funnel into the top of the cartridge shell. Open your IC-RI-DIRES125 pack and pour the fresh resin into the tube, periodically tapping the bottom of the container flat against a hard countertop or floor. Critical Step: You must pack the resin down firmly. Tapping settles the beads, eliminating open air gaps that cause water to channel weakly through loose media.
- Pour the entire contents of the 1.25 lb bag into the column until it sits completely flush with the top rim, place the foam retention ring back onto the center post, and screw the cap back on tight.
- Re-insert the filled cartridge into your clear housing panel with the colored cap facing straight up, hand-tighten the housing, and run your RO system for 2 minutes to clear out any loose dust before collecting water.
Pro Tips:
- Pack the Resin As Tightly As Physically Possible to Stop Water Channeling. When refilling your DI cartridge, the biggest mistake you can make is leaving the resin loose inside the tube. Water always takes the path of least resistance. If the media is loosely packed, incoming water will carve narrow paths or "channels" straight through the beads, bypassing the rest of the filtration bed. This will result in your output water showing a high TDS reading long before the color of the resin actually turns brown. Tap the cartridge firmly against your counter as you fill it to settle the beads into a rock-solid, tight column.
- Divert the Initial Wave of "TDS Creep" Water to Double Your Resin Lifespan. Whenever a reverse osmosis system sits idle for a few hours, a physical phenomenon known as "TDS Creep" occurs. A small amount of salt minerals will naturally diffuse across the RO membrane, causing the first few cups of water produced during a fresh startup to read a very high TDS (often 30–60+ ppm). If this water runs directly into your DI stage, it will rapidly deplete your fresh resin. To save your media, install a simple 3-way ball valve right before your DI canister. Run the first 2 to 3 minutes of startup water straight down the sink drain, and only flip the valve toward your DI stage once the membrane output drops back down to its clean baseline.
- Always Use the Resin Immediately Once the Vacuum Seal is Broken. The pre-portioned IC-RI-DIRES125 package is vacuum-packed to keep the raw resin beads damp and structurally active. Ion-exchange resin contains a high level of internal moisture; if left exposed to the ambient air, the beads will dry out, react with surrounding carbon dioxide, and lose their filtration capacity. Because this 1.25 lb bag is perfectly balanced for a single 10" cartridge change, you should pour the entire contents into your cartridge right away once opened. Do not try to split the bag across multiple small maintenance sessions.