--- product_id: 48129786 title: "K1 Filtering Material. Evolution Aqua" brand: "evolution aqua" price: "£89.65" currency: GBP in_stock: true reviews_count: 10 category: "Evolution Aqua" url: https://www.desertcart.co.uk/products/48129786-k1-filtering-material-evolution-aqua store_origin: GB region: United Kingdom --- # 500 cm² surface area/m³ for max bacteria growth Self-cleaning moving bed design Compatible with all pond filter types K1 Filtering Material. Evolution Aqua **Brand:** evolution aqua **Price:** £89.65 **Availability:** ✅ In Stock ## Summary > 🦠 Revolutionize your pond’s ecosystem with K1 – where science meets effortless clarity! ## Quick Answers - **What is this?** K1 Filtering Material. Evolution Aqua by evolution aqua - **How much does it cost?** £89.65 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/48129786-k1-filtering-material-evolution-aqua) ## Best For - evolution aqua enthusiasts ## Why This Product - Trusted evolution aqua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Maintenance:** Self-cleaning K1 media moves freely, reducing filter upkeep and preserving beneficial bacteria - • **Boost Filter Efficiency:** Dynamic movement displaces old bacteria, ensuring a thriving, balanced ecosystem - • **Universal Compatibility:** Seamlessly integrates with all pond filters including Evolution Aqua EazyPod & Nexus - • **Heavy-Duty & Long-Lasting:** Durable plastic media designed to maintain peak performance season after season - • **Maximize Biological Filtration:** 500 cm² active surface area per m³ fuels rapid nitrifying bacteria growth ## Overview Evolution Aqua’s K1 Filtering Material delivers industry-leading 500 cm² surface area per cubic meter, fostering robust bacterial colonies that naturally eliminate harmful ammonia and nitrites. Its innovative self-cleaning, moving bed design minimizes maintenance while maximizing filter efficiency across all pond filter systems, including EazyPod and Nexus. Trusted by thousands, K1 ensures crystal-clear water and a healthy aquatic environment with minimal hassle. ## Description How does it work? The way K1 biological materials work is important because a delicate ecological system naturally develops bacteria that participate in the nitrification process. K1 material provides maximum active surface area for bacteria to colonize, more than other types of supports. This is the process that removes harmful ammonia and nitrite from water. How is it different from other materials? As the K1 moves inside the filter it causes the old dead bacteria to displace. This leaves room for younger, heavier bacteria to colonize quickly. Inside the wheel is a surface that allows colonies of bacteria to follow their life cycle naturally, maturing, dying, and then feeding the last stages of nitrification. K1 has been designed to offer the best for both young and old bacterial colonies. What is meant by "self-cleaning"? Unlike foam or other forms of static filtering, the K1 is designed to move freely within your filter. The constant chaotic movement of the pump air causes the materials to be automatically cleaned and thus not require as much maintenance. This allows the filter to reach optimum efficiency without the hassle of having to clean it periodically, avoiding unnecessary loss of bacteria within the filter. 50 liters of K1 will take care of up to 250 grams of food per day. Review: Excellent investment - After trawling the internet to find filters for my newly constructed pond I found this product. I watched a few videos of ponds using this media in their filter system and decided to bite the bullet and by 25lts of Kaldness K1 media. It was delivered in good time and on inspection was comprised of round white plastic pieces around 6mm diameter. Within its construct are many fissures which give it a large surface area where all the beneficial bacteria can adhere. I introduced the media to my filter system and it set to work. After a two week period the Kaldness media started to turn brown and I notice a lot of suspended detritus in the water surrounding the media within the filter housing. I drained the water and gave the media a light wash down trying to retain the brown staining as this was the bacteria that was needed. After restarting the pump within two days the pond was dramatically clearer. I have cleaned the filter once more since in the manner described above and my pond now is crystal clear. This product is excellent and I can see from its construct that it will not degrade and be in service for many years. I am very glad I invested in this product I can honestly say that I will not or have to use any other type of media. Excellent buy. Review: Good seller - Very good product and quick delivery ## Features - Helps to remove ammonia and nitrate - Can be used in all types of pond filters - Increases efficiency of filters - Can be used in moving bed filter systems - High surface area to allow for more bacteria to colonise. Perfect for use with Evolution Aqua EazyPod and Nexus filters.. Provides 500cm2 of Surface Area for every 1m3 of K1 media used ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00AHA4ZYK | | Best Sellers Rank | 180,784 in Garden ( See Top 100 in Garden ) 594 in Pond Filtration Equipment | | Brand | Evolution Aqua | | Brand Name | Evolution Aqua | | Customer Reviews | 4.6 out of 5 stars 173 Reviews | | Item Weight | 250 Grams | | Item weight | 250 Grams | | Manufacturer | Evolution Aqua | | Manufacturer Part Number | MEDIAK1/50 | | Model Number | MEDIAK1/50 | | Number of Packs | 1 | | Unit Count | 1.0 count | | Unit count | 1.0 count | ## Product Details - **Brand:** Evolution Aqua - **Colour:** Aqua - **Material:** Plastic - **Style:** Chaotic - **Power source:** Corded Electric - **Item weight:** 250 Grams - **Manufacturer:** Evolution Aqua ## Images ![K1 Filtering Material. Evolution Aqua - Image 1](https://m.media-amazon.com/images/I/31qdbhhByfL.jpg) ## Questions & Answers **Q: I’m refilling my easy pod, it’s a second hand pod. I’ve lost some media over the year, I’ve never been too sure how much needs to go in the easy pod** A: I think the Easy pod has 18l. I used a 1l jug to measure 18l to fill the easy up. **Q: what is the diameter of this media?** A: its approx 10MM diameter **Q: Could you confirm please, is this K1 or K1 micro? The photo is a bag of k1 micro** A: It is K1, not the micro. Where it says K1 Micro it is telling you that this is also available, which it says just above it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent investment *by K***R on 7 May 2015* After trawling the internet to find filters for my newly constructed pond I found this product. I watched a few videos of ponds using this media in their filter system and decided to bite the bullet and by 25lts of Kaldness K1 media. It was delivered in good time and on inspection was comprised of round white plastic pieces around 6mm diameter. Within its construct are many fissures which give it a large surface area where all the beneficial bacteria can adhere. I introduced the media to my filter system and it set to work. After a two week period the Kaldness media started to turn brown and I notice a lot of suspended detritus in the water surrounding the media within the filter housing. I drained the water and gave the media a light wash down trying to retain the brown staining as this was the bacteria that was needed. After restarting the pump within two days the pond was dramatically clearer. I have cleaned the filter once more since in the manner described above and my pond now is crystal clear. This product is excellent and I can see from its construct that it will not degrade and be in service for many years. I am very glad I invested in this product I can honestly say that I will not or have to use any other type of media. Excellent buy. ### ⭐⭐⭐⭐⭐ Good seller *by K***K on 20 February 2024* Very good product and quick delivery ### ⭐⭐⭐⭐ Check the size. *by M***R on 27 June 2019* Proven product. I would benefit better labeling as this is the Micro version and not the standard. ## Frequently Bought Together - Evolution Aqua K1 Biological Filter Media - 50L, Black, Plastic, Submersible, Aquarium Biological Filter Media - 1 1/2" UNISEAL Flexible Tank Adapter (bulkhead) - 6 Pack - 2'' UNISEAL Flexible Tank Adapter (bulkhead) - 6 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/48129786-k1-filtering-material-evolution-aqua](https://www.desertcart.co.uk/products/48129786-k1-filtering-material-evolution-aqua) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-27*