--- product_id: 87216139 title: "Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black" brand: "oase" price: "$39.19" currency: USD in_stock: true reviews_count: 12 category: "Oase" url: https://www.desertcart.us/products/87216139-indoor-aquatics-pre-filter-foam-set-of-6-for-biomaster store_origin: US region: United States of America --- # Optimized for Biomaster 250-600 6 coarse 30 PPI foams Customizable filtration layers Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black **Brand:** oase **Price:** $39.19 **Availability:** ✅ In Stock ## Summary > 🧼 Keep your aquarium crystal clear—because your fish deserve the best! ## Quick Answers - **What is this?** Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black by oase - **How much does it cost?** $39.19 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/87216139-indoor-aquatics-pre-filter-foam-set-of-6-for-biomaster) ## 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 - • **Compact & Efficient:** Space-saving dimensions (6.3" x 2.36" x 4.92") that deliver powerful filtration without bulk. - • **Maximized Water Flow:** Designed to prevent clogging and maintain optimal filtration performance for healthier aquatic life. - • **Effortless Maintenance:** Six durable replacement foams ensure you’re always ready for timely filter refreshes. - • **Tailored Aquarium Care:** Mix and match coarse and fine foams to perfectly suit your tank’s unique ecosystem. - • **Universal Compatibility:** Specifically engineered for Biomaster 250, 350, and 600 models—seamless fit guaranteed. ## Overview The OASE Indoor Aquatics Pre-Filter Foam Set includes six 30 PPI coarse replacement foams designed for Biomaster 250, 350, and 600 aquarium filters. These foams allow customizable filtration to match your tank’s size and bioload, preventing clogging and maintaining optimal water flow. Compact and durable, this set ensures easy maintenance and superior aquatic health. ## Description The pre-filter foam set 30 ppi for the biomaster 250, 350, or 600 includes six coarse replacement filter foams. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium. Timing to replace the pre-filter foam set varies upon aquarium size, number of fish and plants, and declines in filter performance. Review: Awesomeness - Works great in my filter... Review: Fits perfectly and does the job - It baffles me that the Biomaster filter chose to include the finest sponges for the intake area, rather than the output! As others noted, the super fine sponges picked up lots of debris and predictably clogged up, reducing flow rates noticeably. The new filter sponges replaced the originals nicely, and are doing a great job. Oase just needs to make these prefilter sponges in the largest diameter sponge (blue), and put the finer sponge material in a tray just before the water is returned to the tank. ## Features - The Pre-Filter Foam Set 30 Ppi For The Bio Master 250, 350, Or 600 Includes 6 Coarse Replacement Filter Foams - Customize Your Choice Of Filter Foams To Meet The Needs Of Your Aquarium - Timing To Replace The Pre-Filter Foam Set Varies Upon Aquarium Size And The Number Of Fish And Plants - Package Dimensions: 6.3" L X 2.36" W X 4.92" H ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HCRMGLK | | Allergen Information | Hazelnuts Free | | Best Sellers Rank | #44,216 in Pet Supplies ( See Top 100 in Pet Supplies ) #550 in Aquarium Filter Accessories | | Brand | OASE | | Brand Name | OASE | | Customer Reviews | 4.8 out of 5 stars 132 Reviews | | Global Trade Identification Number | 00706759496261 | | Included Components | 6 30 ppi replacement filter foams | | Item Form | Foam | | Item Type Name | Pre-Filter | | Manufacturer | OASE | | Manufacturer Part Number | 49626 | | Model Number | 49626 | | Number of Items | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 706759496261 | ## Images ![Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black - Image 1](https://m.media-amazon.com/images/I/91UwCRwYBpL.jpg) ![Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black - Image 2](https://m.media-amazon.com/images/I/71ebf2tWn7L.jpg) ## Questions & Answers **Q: Are the orange filters coarse? I thought orange was fine and coarse was black??** A: The orange pre-filter foams are 30 ppi coarse foams. We hope this helps. Best Regards, Your OASE Aquatic Specialist, Jennifer. **Q: What are the dimensions** A: Hi, the dimensions are 3.8 x 2 x 6 inches. We hope this helps. **Q: What is the center hole diameter?** A: Hello. The measurement for the center hole is 1/2 inch inner diameter. We hope this helps! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Awesomeness *by E***E on April 22, 2026* Works great in my filter... ### ⭐⭐⭐⭐⭐ Fits perfectly and does the job *by M***D on April 29, 2024* It baffles me that the Biomaster filter chose to include the finest sponges for the intake area, rather than the output! As others noted, the super fine sponges picked up lots of debris and predictably clogged up, reducing flow rates noticeably. The new filter sponges replaced the originals nicely, and are doing a great job. Oase just needs to make these prefilter sponges in the largest diameter sponge (blue), and put the finer sponge material in a tray just before the water is returned to the tank. ### ⭐⭐⭐⭐⭐ Get multiple sets *by J***M on December 21, 2025* Great replacement sponges for my Biomaster thermo filter. I have purchased several sets so that I can easily swap them out when I do a quick cleaning. I have one set in the filter, one soaking/cleaning, and another set ready to go. Saves time when I am in a hurry. ## Frequently Bought Together - OASE Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black - OASE Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 45 Ppi - OASE Indoor Aquatics Filter Foam Biomaster 20 Ppi Blue --- ## 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.us/products/87216139-indoor-aquatics-pre-filter-foam-set-of-6-for-biomaster](https://www.desertcart.us/products/87216139-indoor-aquatics-pre-filter-foam-set-of-6-for-biomaster) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-13*