--- product_id: 259333035 title: "Sera Siporax Professional Filter Media 15mm 1000ml" brand: "sera" price: "HK$361" currency: HKD in_stock: true reviews_count: 5 url: https://www.desertcart.hk/products/259333035-sera-siporax-professional-filter-media-15mm-1000ml store_origin: HK region: Hong Kong --- # 3D porous tunnel structure 15mm precision pore size 34x higher biodegradation Sera Siporax Professional Filter Media 15mm 1000ml **Brand:** sera **Price:** HK$361 **Availability:** ✅ In Stock ## Summary > 🧪 Elevate your aquarium’s ecosystem with science-backed, pro-grade filtration! ## Quick Answers - **What is this?** Sera Siporax Professional Filter Media 15mm 1000ml by sera - **How much does it cost?** HK$361 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/259333035-sera-siporax-professional-filter-media-15mm-1000ml) ## Best For - sera enthusiasts ## Why This Product - Trusted sera brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Self-Cleaning:** Biologically self-regenerating filter media reduces maintenance and keeps your aquarium ecosystem thriving. - • **Optimized 3D Porous Design:** Engineered with a three-dimensional tunnel structure that maximizes surface area for bacterial colonization. - • **Precision Pore Size Matching:** 15mm granules perfectly sized to foster ideal bacterial growth, ensuring superior biological filtration. - • **Unmatched Biodegradation Power:** Delivers 34 times the breakdown efficiency of standard clay filters for crystal-clear water. - • **Scientifically Validated Surface Area:** Offers 270 m²/l surface area, proven optimal for cleaning bacteria settlement and performance. ## Overview Sera Siporax Professional Filter Media is a high-performance, biologically self-cleaning aquarium filter medium featuring a unique 3D porous tunnel structure and 15mm granules. It provides 34 times higher biodegradation efficiency than conventional clay filters, with an optimal 270 m²/l surface area scientifically designed to promote ideal bacterial colonization for superior biological filtration and water clarity. ## Description In order for cleaning bacteria to settle in or in a filter medium, the filter medium must have a certain surface structure. The larger the surface, the smaller the pores. From an area of about 450 m² per litre, the pores are so small that no bacteria can grow in. As shown in a university study, 270 m²/l is the optimal colonization area, as the pore size is precisely matched to the bacteria size and the bacteria can settle perfectly. This is exactly what sera siporax offers it. Cleaning bacteria in the filter ensure that harmful substances, such as excretions of fish, can be biodegraded in a biological way. In order to fulfil their task, you need a filter medium on and in which they can settle. However, the filter medium must meet some criteria so that it is ideally suited for colonisation by cleaning bacteria. The size of the salt crystals corresponds to the size of the bacteria - this is particularly important as they determine the size of the pores as a placeholder. The mixture is pressed into a ring shape and at approx. 780 °C sintered, i.e. fired. Then the rings are washed out so that the salt crystals are removed and the pore structure remains behind. ## Features - Biologisch zelf reinigend high-performance filtermedium. - Porieke, driedimensionale tunnel- of poriestructuur - 34 keer hogere afbreekprestaties dan conventionele kleifiltermaterialen. ## Technical Specifications | Specification | Value | |---------------|-------| | Allergen Information | Sulphites Free | | Asin | B000A215HK | | Best Sellers Rank | #39,504 in Pet Supplies (See Top 100 in Pet Supplies) #2,516 in Aquarium Accessories | | Brand Name | Sera | | Customer Reviews | 4.7 4.7 out of 5 stars (4,382) 4.7 out of 5 stars | | Global Trade Identification Number | 04001942084727 | | Item Form | Stick | | Item Type Name | Sera Siporax Professional 15 mm 1, 000 mL, 10.2 oz. Aquarium Filter Accessories | | Item Weight | 0.29 Kilograms | | Liquid Volume | 1000 Milliliters | | Manufacturer | Sera | | Manufacturer Part Number | 8472 | | Model Number | 8472 | | Number Of Items | 1 | | Number Of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | Unit Count | 1000 Milliliters | | Upc | 700580146760 | | Warranty Description | No | ## Product Details - **Brand:** Sera - **Item form:** Stick - **Item weight:** 0.29 Kilograms - **Liquid volume:** 1000 Milliliters - **Manufacturer:** Sera ## Images ![Sera Siporax Professional Filter Media 15mm 1000ml - Image 1](https://m.media-amazon.com/images/I/71uQPpzgfeL.jpg) ![Sera Siporax Professional Filter Media 15mm 1000ml - Image 2](https://m.media-amazon.com/images/I/71R0rLtXDIL.jpg) ![Sera Siporax Professional Filter Media 15mm 1000ml - Image 3](https://m.media-amazon.com/images/I/71W6qU+iaDL.jpg) ![Sera Siporax Professional Filter Media 15mm 1000ml - Image 4](https://m.media-amazon.com/images/I/71o2ZMRofEL.jpg) ![Sera Siporax Professional Filter Media 15mm 1000ml - Image 5](https://m.media-amazon.com/images/I/71e6P-edcLL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Super! *by on Reviewed in Germany 25 February 2025* Super! Alles. ### ⭐⭐⭐⭐⭐ bester Nitritfilter überhaupt *by on Reviewed in Germany 7 July 2026* Was soll man sagen das Produkt gibt es seit den 90er Jahren und es funktioniert ! Der beste Nitritfilter den es gibt. Preislich fair. Gibt wohl jetzt auch Konkurrenzprodukte mittlerweile davon aber das ist halt das Original.Wenn ich könnte würde ich 10 Sterne geben :) ### ⭐⭐⭐⭐⭐ Top product *by on Reviewed in the United Kingdom 29 October 2023* As usual top item from Sera! ## Frequently Bought Together - sera siporax Aquarium Bio-Filter Medium for 53 gal. | Maximal Optimization of Biological Filtration | 10.2 oz. Aquarium Filter Accessories | Biological Filtration for Aquariums - Seachem Indoor Purigen Organic Filtration Resin - Fresh and Saltwater 100 ml - Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml --- ## 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.hk/products/259333035-sera-siporax-professional-filter-media-15mm-1000ml](https://www.desertcart.hk/products/259333035-sera-siporax-professional-filter-media-15mm-1000ml) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-09-26*