SKU: 6150768554

Evolution Aqua K+ Down-Flow Filter Media Sinking 50L

Sale price$80.95 Regular price$89.95
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

Evolution Aqua K+ Down-Flow Filter Media Sinking 50LEvolution Aqua K+ Down Flow Filter Media Sinking 50L K+ media provides the maximum active surface area for bacteria to colonise, more than other types of static media. It is this process which removes harmful ammonia and nitrite from the water. Unlike foam, matting, or other forms of static filtration media, the Kaldnes media is designed to move freely within your filter and the constant chaotic movement of the air from your pump, causes the media to

Evolution Aqua K+ Down-Flow Filter Media Sinking 50L

K+ media provides the maximum active surface area for bacteria to colonise, more than other types of static media. It is this process which removes harmful ammonia and nitrite from the water. Unlike foam, matting, or other forms of static filtration media, the Kaldnes media is designed to move freely within your filter and the constant chaotic movement of the air from your pump, causes the media to self-clean and thus requires no maintenance - this allows the filter to reach optimum effectiveness without the disturbance of periodic cleaning, avoiding unnecessary loss of bacteria within the filter.

K Plus - Whats New?
With a new shape and profile, K+Media has also been designed to have an increased and class leading surface area, meaning an overall surface area of 1,350m2 per m3. More importantly for biological filtration, the protected surface area of K+Media is 1,025m2 per m3. This allows a stable bio-film to form and remain intact when used in moving bed biological filtration, as in the new Nexus+.

The shape of K+Media optimises the amount of “quiet zones” within the media where a stable bio-film can develop. Whilst K+Media keeps the integral profile of K1 Media at its core, there is an extra layer of cells and fins around the outside of each piece that enable microscopic organisms such as Rotifers and Vorticella to thrive. This is an additional benefit as competitor media do not have such “quiet zones” that would allow these higher lifeforms of filter feeders to develop. The bacteria and organisms that form within the bio-film ensure the media delivers optimum levels of biological filtration in the moving bed, which has been proven filtration technology for many years in the fishkeeping hobby.

As Evolution Aqua extrude the K+Media, Minerals and Enzymes are added to the raw material. The result of this process, unique to Evolution Aqua, is a filtration media that not only outperforms most of its competitors due to its large protected surface area, but also answers the problem of how to speed up the time taken to mature your filter.

Specifications
K+ total surface area: 1350m2 per m3
K+ total protected surface: 1025m2 per m3
Floating media ideal for MBBR (Moving Bed Bio-Film Reactor filters)
Sinking media ideal for down-flow filtration systems

Dimensions
10.2mm Diameter
8mm Width

  • Advanced K+Media engineered with a new design for improved filtration
  • 1025m2/m3 protected surface area and 1350m2/m3 total surface area
  • Stable Bio-film can develop within the quiet zones to allow rotifers, vorticella etc to thrive
  • Faster filter maturation times thanks to minerals incorporated into K+Media
  • Floating version for MBBR and sinking version for down-flow
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 6150768554

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4.3 ★★★★★
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Verified Purchase
John Day
Lexington, US
★★★★★ 5
Fits
Size: CRV (2023-2025) 1.5L Gas
Fit and worked just fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 11, 2025
T
The Blind Guru
Fort Morgan, US
★★★★★ 5
Convenient and Cost-Effective Air Filter Set for Gasoline Engine
Size: CRV (2023-2025) 1.5L Gas, Size: CRV (2023-2025) 1.5L Gas
Why did you pick this product vs others?: The set includes both the engine air filter and the cabin air filter, which I find extremely convenient because both usually need replacing around the same time—especially if you drive in dusty environments or have seasonal allergies. Ease of installation: I replaced both filters myself in under 20 minutes using just basic tools. No instructions are included, but a quick search online brought up several helpful videos tailored to my car model. Both filters fit perfectly without any force or trimming needed, which isn’t always the case with aftermarket brands. Functionality: From past experience, replacing the engine air filter regularly (every 12,000 to 15,000 miles as suggested in the owner’s manual) helps maintain better fuel efficiency and extends engine life by keeping debris out of the combustion chamber. After swapping in the new filter, I noticed the engine ran slightly smoother—especially on acceleration. Smell: The cabin air filter is equally important, particularly for passengers with allergies or sensitivity to airborne particles. I could immediately tell the airflow from the vents was stronger and fresher-smelling after the replacement, which suggests the old filter was overdue. Value for money: The ITESIER Cabin and Engine Air Filter combo pack is a smart buy for anyone maintaining a gasoline-powered vehicle like my Honda Civic. This combo pack offers good value for money compared to buying each filter separately. Quality: Overall, if you’re comfortable with basic DIY car maintenance, this kit is a great choice. It’s affordable, fits properly, and provides an easy way to knock out two important maintenance tasks in one go. Filter quality: The filters are high quality. They work without problems. Just be aware that this is designed only for gasoline engines—it won’t be compatible with diesel or hybrid powertrains.
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Reviewed in the United States on July 16, 2025
M
Mel M
Carnegie, US
★★★★★ 5
Exactly what I needed
Size: CRV (2023-2025) 1.5L Gas
I'm not sure how much there is to say about an automotive cabin air filter. I double-checked the specs to make sure this was compatible with my car, ordered the filter, then installed it. It fit, it didn't have a weird smell, I haven't thought about it since. That's exactly what I want in an air filter. Five stars!
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Reviewed in the United States on October 20, 2025
B
Verified Purchase
Brook
Birmingham, US
★★★★★ 5
Worked perfect for my Jeep Grand Cherokee L
Pleasantly surprised with the quality. It seemed better than the original filter that I took out of my 2021 Jeep Grand Cherokee L. Seems like it’ll last a while and I really like the charcoal addition. Has worked well so far and car smells clean.
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Reviewed in the United States on February 13, 2026
M
Verified Purchase
Mark Downs
Belleville, US
★★★★★ 5
Quality filter
Nice filter, fits perfect in the WL model (not the WK!) I will buy this one again, far superior to the OEM filter from the dealer!
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Reviewed in the United States on August 19, 2025

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