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This 5 micron pleated sediment filter cartridge is built for the problems you notice first: sand settling in the toilet tank, grit catching in the faucet aerator, or a SMART or carbon stage that clogs up far too early. Rust, silt and dirt make water look murky, but the bigger issue is what they do further along, where they pile up inside the more expensive filters. Stopping them before they get there is the whole purpose of a sediment stage.
Crystal Quest builds this cartridge from pleated cellulose, folded into a large filtering surface over a polypropylene core. In its own equipment, Crystal Quest places it first in the triple cartridge systems and relies on it to pre-filter sediment for its whole house and whole house RO systems, so the membrane, carbon and SMART filters that follow stay protected. You can choose from four sizes, covering countertop, under-sink, whole house and Big Blue housings.
Look closely and you see deep folds, evenly spaced around the whole cartridge. The cellulose sits on a stiff polypropylene core, polyethylene mesh holds every fold in its place, and vinyl plastisol closes off both ends, leaving water no route except straight through the media.
Over time the white folds turn brown or grey with what they have trapped. It is a clear sign of how much dirt never made it into your plumbing.
Sediment filtration is purely physical. While water flows through the cellulose, anything larger than 5 microns gets stuck. No chemicals are released and nothing is added; the cartridge just stops particles that are too big to fit through.
Because the media is folded, a cartridge of the same dimensions offers far more filtering area. Water then moves through any single spot more gently, pressure loss stays small and the trapped dirt is spread out instead of concentrated. In practice that means steady flow and many months of use before the cartridge is full.
Most particles collect on the outside of the folds, where you can check them by eye. One look tells you how heavily your water loads the filter, so you know whether to swap cartridges sooner when your supply is especially dirty.
The media in carbon and SMART cartridges, and the membrane in an RO system, exist to change what is dissolved in your water, not to catch mud. Any grain the sediment cartridge stops is one that can't plug or cover those stages. Changing the sediment filter on time lets the rest of the system reach its expected lifespan.
It takes out:
It does not treat dissolved substances. Fluoride, hardness, chlorine, VOCs, nitrate, pesticides and dissolved metals such as lead and iron go straight through, as do viruses and bacteria. Those jobs belong to the stages after it: reverse osmosis, specialty cartridges, the SMART Filter Cartridge and the Coconut Based 5-Micron Carbon Block Filter Cartridge.
Folded cellulose media on a polypropylene core for rigidity, with vinyl plastisol sealing off each end. It is rated at 5 microns.
Folding the media creates a lot of filtering area. That gives it room to collect plenty of dirt while flow stays strong, even at 5 microns.
With pleats, most dirt lands on one wide, folded surface. A spun polypropylene cartridge catches dirt inside a thick wound layer of fibre instead. For their sediment stage, Crystal Quest systems use the pleated cellulose version as standard.
No. It only catches particles that float in the water. Nitrate, pesticides and dissolved metals call for a specialty, SMART or carbon cartridge.
Plan on every 12 to 24 months; most homes land around 18 months. Swap it earlier if you notice a change in taste, odor, flow or pressure. The real lifespan depends on the quality of your incoming water, how your system is set up and how much you use.
Measure the diameter and length of the cartridge you are replacing: 2-7/8" x 9-3/4", 2-7/8" x 20", 4-5/8" x 9-3/4" or 4-5/8" x 20". They fit, in that order, 2.5" x 10", 2.5" x 20", 5" x 10" Big Blue and 5" x 20" Big Blue housings.
All sizes are rated at 5 microns. Sizes are actual cartridge diameter x length.
| SKU | Size | Fits housing | Micron | Typical replacement |
|---|---|---|---|---|
| CQE-RC-04001 | 2-7/8" x 9-3/4" | 2.5" x 10" | 5 | 12 to 24 months* |
| CQE-RC-04015 | 2-7/8" x 20" | 2.5" x 20" | 5 | 12 to 24 months* |
| CQE-RC-04033 | 4-5/8" x 9-3/4" | 5" x 10" Big Blue | 5 | 12 to 24 months* |
| CQE-RC-04034 | 4-5/8" x 20" | 5" x 20" Big Blue | 5 | 12 to 24 months* |
| Media | Pleated cellulose on a polypropylene core |
| Micron rating | 5 micron |
| Reduces | Sediment and suspended particles |
| Not designed for | Dissolved contaminants, chlorine, VOCs, metals, nitrate, microbiologically unsafe water |
| Water temperature | 40°F to 145°F (4.4°C to 62.8°C) |
Dimensions are actual cartridge diameter x length in inches; nominal housing names are not cartridge measurements.
*Typically 12 to 24 months, about 18 months for most homes. Replace sooner if taste, odor, flow or pressure changes. Actual life depends on feed water quality, system configuration and usage.
Protect every stage behind it. Pair it with a SMART cartridge and a carbon block when your system uses them.
| SKU | Size | Fits housing | Used in |
|---|---|---|---|
| CQE-RC-04001 | 2-7/8" x 9-3/4" | 2.5" x 10" | Crystal Quest countertop and under-sink systems |
| CQE-RC-04015 | 2-7/8" x 20" | 2.5" x 20" | Whole house cartridge housings |
| CQE-RC-04033 | 4-5/8" x 9-3/4" | 5" x 10" Big Blue | Larger compact, whole house and whole house RO housings |
| CQE-RC-04034 | 4-5/8" x 20" | 5" x 20" Big Blue | Larger compact, whole house and whole house RO housings |
Match the actual size printed on your current cartridge or in your order history.
These are actual cartridge measurements. Housings are often described by nominal sizes such as 2.5 x 10 or 5 x 20, which are not cartridge measurements.
For a Pentair or other-brand housing, confirm its exact model, cartridge dimensions and seal design. A nominal housing size alone does not confirm the replacement.
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Join the Aquiowell community and receive your discount code instantly, plus practical advice on water quality, filtration and choosing the right system for your home.