BioStyle Replacement Filter Cartridge (Set of 4)

Maintain the efficacy of your BioStyle filtration system with BioStyle Replacement Filter Cartridges.

Features of the BioStyle Replacement Filter Cartridge:

• Comprehensive Compatibility: Designed for BioStyle 20, 30, & 50 and BioStyle Thermo 30 & 50.
• 5-in-1 Filtration: Multi-stage cartridge ensures clean, clear, and healthy water through an efficient 5-in-1 process.
• Hassle-Free Maintenance: Disposable cartridges are easy to remove and replace, minimizing mess.
• Complete Set: Includes four cartridges, fitting neatly inside the BioStyle filter chamber. Quantity needed varies by filter size.
• Detailed Filtration Stages:
• Stage 1: Filter Foam – 45 ppi foam traps debris and provides surface area for beneficial bacteria.
• Stages 2-4: Chemical Media Mix – Carbon, zeolite, and phosphate binder eliminate odors, impurities, and harmful nutrients.
• Stage 5: Filter Fleece – Captures fine debris, polishing the water for clarity.
• Timely Replacement: Replace every 4 - 6 weeks based on aquarium size, fish population, and performance.
• Easy Preparation: Rinse with water before use; do not open the cartridge.

Upgrade your aquarium maintenance with the OASE BioStyle Replacement Filter Cartridge for a consistently vibrant and healthy aquatic environment.

• Free Shipping is valid for orders with a subtotal exceeding $199 and all orders will be shipped via UPS. Items purchased for delivery after 3pm will ship the following day. Items purchased for delivery after 3pm on Friday will ship Monday.
• Koi Fish only ship Monday- Wednesday. For orders placed after 3pm on Wednesday, the order will be shipped the following Monday.
• For Motor Freight (LTL) Shipments, oversized or heavy items unsuitable for traditional parcel delivery will be dispatched through a motor freight carrier, as indicated on the product page. Once the carrier receives your order, they will reach out to arrange a delivery time. An individual aged 18 or older must be present to sign for the delivery.
• You may return or exchange an unused or unopened item for a refund (excluding shipping and handling charges) within 30 days of purchase. Following 30 days, the item may be returned in exchange for a store credit. Used chemicals and fish food are not returnable. In addition, all sales on Japanese Koi are final and non-refundable. Should you have any questions or concerns when your fish arrive, please call 908-420-9908.