--- product_id: 253980226 title: "OASE Indoor Aquatics Biomaster 250" brand: "oase" price: "€ 70.43" currency: EUR in_stock: false url: https://www.desertcart.it/products/253980226-oase-indoor-aquatics-biomaster-250 store_origin: IT region: Italy --- # 4-stage sealed filtration Whisper-quiet operation EasyClean modular prefilter OASE Indoor Aquatics Biomaster 250 **Brand:** oase **Price:** € 70.43 **Availability:** ❌ Out of Stock ## Summary > 🧬 Elevate your aquarium’s ecosystem with precision filtration that’s as smart as you are. ## Quick Answers - **What is this?** OASE Indoor Aquatics Biomaster 250 by oase - **How much does it cost?** € 70.43 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/253980226-oase-indoor-aquatics-biomaster-250) ## Best For - oase enthusiasts ## Why This Product - Trusted oase brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Silent yet powerful:** Enjoy whisper-quiet water circulation that keeps your aquatic environment serene and stress-free. - • **Boosted oxygenation & flow:** Includes diffuser and spray bar for uniform surface movement and optimal dissolved oxygen levels. - • **Modular EasyClean prefilter:** Quickly remove and clean the prefilter separately to extend filter life and maintain peak performance. - • **Quadruple filtration mastery:** Biological, mechanical, chemical, and prefiltration work in harmony for crystal-clear, toxin-free water. - • **Precision German-Italian engineering:** Compact, energy-efficient design with adjustable flow and self-priming for effortless setup and maintenance. ## Overview The OASE Indoor Aquatics Biomaster 250 is a premium external aquarium filter designed for both freshwater and marine tanks. Featuring a compact, energy-efficient design with 4-stage sealed filtration—biological, mechanical, chemical, and prefiltration—it ensures superior water clarity and quality. Its innovative Hel-X biomedia maximizes beneficial bacteria growth, while the EasyClean prefilter module simplifies maintenance. Engineered in Germany and manufactured in Italy, this quiet, self-priming filter includes adjustable flow, a diffuser for enhanced oxygenation, and a 3-year warranty with an optional 1-year extension, making it a top-tier choice for discerning aquarium enthusiasts. ## Description The BioMaster line of premium external filters are perfect for marine and freshwater aquariums. The BioMaster 250 boasts 4-stage filtration in a compact design. Biological, mechanical, chemical, and prefiltration all work together to provide your aquarium with optimal water quality and clarity. The BioMaster filters are designed with sealed filtration pathways to ensure water flow is getting the full benefits of prefiltration, filter media for clearer water, Hel-X Biomedia provide a large suspended settlement surface for microorganisms, and activated carbon for ideal nutrient reduction and removal of toxins. The EasyClean prefilter module can be removed and cleaned separately from the rest of the filter for high efficiency and to extend the life of your filter. The water flow can easily be adjusted on both the inlet and outlet adapters for the filter. Created for convenient placement under the aquarium. Created for convenient placement under the aquarium. Install the included diffuser and spray bar for uniform surface movement and additional dissolved oxygen for ideal water quality. This filter also features a carrying handle for simple moving and maintenance. This energy-efficient design includes a self-priming function for easy operation on startup and after cleaning. Includes a shut-off automation with built-in check valve to prevent leakage when cleaning the filter. Designed using German engineering and manufactured in Italy, this quiet operating filter is supported by an included 3 year warranty with a free 1 year warranty extension with online product registration. Customize your prefilter by combining coarse, fine, ultra fine, and activated carbon filter foams. ## Features - External filter operates quietly to circulate and filter your aquarium water - Includes 4-stage filtration: biological, mechanical, chemical, and prefiltration - Hel-x, suspended Filter media, creates the optimal surface area for beneficial bacteria growth - The sealed filtration pathway allows you to get the full benefits from all 4-stages of filtration - The easy clean prefilter module can be removed separately from the rest of the filter for simple cleaning and to extend the life of your filter.All Life Stages ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DFNKNBG | | Best Sellers Rank | #107,385 in Pet Supplies ( See Top 100 in Pet Supplies ) #7,529 in Aquarium Accessories | | Brand Name | Oase | | Color | Black/Blue | | Customer Reviews | 4.3 4.3 out of 5 stars (148) | | Global Trade Identification Number | 00706759551458 | | Included Components | GeoGlobal Partners 40755145: BioMaster 250 External Canister Filter | | Item Dimensions L x W x H | 23.9L x 23.9W x 23.9H centimeters | | Item Length | 13 Feet | | Item Type Name | GeoGlobal Partners 40755145: BioMaster 250 External Canister Filter | | Item Weight | 11.2 Pounds | | Manufacturer | GeoGlobal Partners LLC | | Manufacturer Part Number | 55145 | | Manufacturer Warranty Description | 3 year limited + 1 year warranty extension with online registration | | Material Type | Plastic | | Model Number | 55145 | | Number of Items | 1 | | Product Style | Biomaster 250 | | Specific Uses For Product | Aquarium for freshwater fish | | UPC | 706759551458 | | Unit Count | 1 Count | | Voltage | 120 Volts | ## Product Details - **Brand:** Oase - **Colour:** Black/Blue - **Material:** Plastic - **Product dimensions:** 23.9L x 23.9W x 23.9H centimeters - **Style:** Biomaster 250 ## Images ![OASE Indoor Aquatics Biomaster 250 - Image 1](https://m.media-amazon.com/images/I/710qYz9of5L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What is the tubing diameter for bio master 350** A: The tubing size is 5/8 in. ID (16/22 mm) **Q: Is it use 120 voltage ?** A: Yes, The OASE BioMaster 350 is rated for 120 voltage. We hope this helps. **Q: Will the biomaster 600 be able to adequately circulate the water in my 90 gal. Freshwater tank? It will have a low fish load and planted.** A: Thanks for your question! The BioMaster 600 is sized for aquariums up to 160 gallons, so yes it should work for your tank. — Steve at Practical Garden Ponds, 484-237-2080 **Q: What size for a 20 gallon planted tank?** A: Thank you for your question! The smallest size of BioMaster filter is the BioMaster 250, which is capable of filtering aquariums up to 70 gallons, so it would be more than sufficient for your 20 gallon tank. The BioMaster 250 is available here on Amazon: https://www.amazon.com/dp/B07DFNKNBG/ — Steve at Practical Garden Ponds, 484-237-2080 ## Frequently Bought Together - OASE BioMaster External Filter for Aquariums up to 70 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - OASE Indoor Aquatics HeatUp 150 Watt Aquarium Heater - Seachem Matrix, 4 L / 1 gal. --- ## 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.it/products/253980226-oase-indoor-aquatics-biomaster-250](https://www.desertcart.it/products/253980226-oase-indoor-aquatics-biomaster-250) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-09-23*