IceCap 5 Micron CTO Carbon Block RO Pre-filter, 10in
SKU: IP-RI-CT105
- The IceCap 5 Micron CTO Carbon Block is a 10in second-stage pre-filter cartridge for standard RO housings.
- It is designed to remove chlorine and organics from feed water before they reach and damage the RO membrane.
- It fits the IceCap RODI system and virtually any other brand that uses a standard 10in filter housing.
- Use only with microbiologically safe and adequately disinfected water; flush for a minimum of 10-15 minutes before use.
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5 Micron CTO Carbon Block Pre-filter for Reverse Osmosis Systems
The IceCap 5 Micron CTO Carbon Block is a standard second-stage pre-filter cartridge for reverse osmosis and RO/DI systems on chlorinated municipal water. It is positioned after the sediment stage and before the RO membrane, where it removes residual chlorine and organics that a sediment filter alone cannot intercept. Left untreated, chlorine in feed water will degrade and eventually destroy a thin-film composite (TFC) membrane, making a functional carbon block pre-filter a non-optional part of any RO system on city water.
The 10in industry-standard form factor fits the IceCap Smart RODI system as well as virtually every other brand's standard filter housing. This is a CTO (Chlorine, Taste, Odor) carbon block, which treats for chlorinated municipal water. If your water utility uses chloramine rather than chlorine, this cartridge will not provide adequate protection — see the IceCap Chloramine Reducing Carbon Block instead.
Key Features:
- Removes chlorine and organics at the second stage of a standard RO pre-filter sequence
- 5 micron rating blocks fine particulates that pass through a coarser sediment stage
- Fits any standard 10in filter housing, including the IceCap Smart RODI system
- CTO formulation treats chlorinated municipal water; not rated for chloramine removal
- For use with microbiologically safe and adequately disinfected water only
- Flush for a minimum of 10-15 minutes before directing output to the RO membrane
Ideal For:
- Hobbyists on chlorinated municipal water replacing an expired carbon block in an IceCap or compatible RO system
- Reef and freshwater aquarium keepers maintaining the pre-filter stage of a multi-stage RO or RO/DI system
- Anyone building a new RO system using standard 10in housings who needs a reliable, straightforward carbon block
Pro Tips:
- Confirm your water utility uses chlorine, not chloramine, before buying this cartridge. CTO carbon blocks treat for chlorine. If your municipality has switched to chloramine, this filter will not adequately protect your membrane. Request a water quality report from your utility to confirm.
- Always flush for at least 10-15 minutes before use. Carbon fines are released during the first flush. Do not run the output to your RO membrane or aquarium until the initial flush is complete.
- Replace on schedule, not on taste or smell. Chlorine removal capacity declines gradually before it becomes detectable. Replace this cartridge at your system's recommended service interval to prevent membrane damage.
- Change the sediment and carbon block together. If the sediment pre-filter is clogged or exhausted, it can push particulates toward the carbon block, reducing the carbon block's effective service life. Replacing both at the same time during routine maintenance is the cleaner practice.
What's Included:
1x IceCap 5 Micron CTO Carbon Block cartridge (10in standard size)
Specifications:
- SKU: IP-RI-CT105
- Filter Type: CTO carbon block (chlorine, taste, odor)
- Cartridge Size: 10 inches (industry standard)
- Micron Rating: 5 micron
- Compatibility: Fits any standard 10in RO filter housing
- Use Requirement: For use with microbiologically safe and adequately disinfected water only
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.
Instructions:
- Verify your feed water is microbiologically safe and adequately disinfected before use.
- Remove the existing carbon block cartridge from your standard 10in filter housing.
- Insert the IceCap 5 Micron CTO Carbon Block into the housing and hand-tighten the canister.
- Position this cartridge as the second stage, after the sediment pre-filter and before the RO membrane.
- Flush the cartridge for a minimum of 10-15 minutes before directing output to your RO system or aquarium.
- Resume normal RO system operation once the flush is complete.
- Replace the cartridge at the recommended service interval.